Bitcoin Forum
January 22, 2019, 11:34:36 AM *
News: Latest Bitcoin Core release: 0.17.1 [Torrent]
 
   Home   Help Search Login Register More  
Pages: « 1 ... 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 [2079] 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 ... 2139 »
  Print  
Author Topic: Swedish ASIC miner company kncminer.com  (Read 3039465 times)
teslaman
Member
**
Offline Offline

Activity: 60
Merit: 10


View Profile
October 19, 2015, 11:18:29 PM
 #41561

Thanks for the mention TXSteve. Smiley

The one thing in that video that I wouldn't recommend doing more than once, is bending those ends down on the cube case. It got pretty flimsy the second time I did that and it completely broke off the third time! Sad KnC used some really cheap metal, which is even more aggravating considering what we paid for them, heh.

As TXSteve mentioned, taking the stickers off the VRMs is a good idea, especially if you use the thermal tape, like they did in the video.

GenTarkin, here's my before and after temps with the heatsinks and thermal epoxy/adhesive. http://i.imgur.com/2aE6f7S.jpg This is on a Neptune cube, but they are laid out the same. That hot VRM must be messed up or something, because it always runs really hot compared to all the rest of my cubes.

These also compare the different fans, KnC's supplied fans and the Noctua upgrade:
Copper Heatsinks with thermal tape: http://i.imgur.com/fcX9cp7.jpg
VS
Copper Heatsinks with thermal epoxy: http://i.imgur.com/yNIsXby.jpg
As you can see, the epoxy worked quite a bit better than the 3M thermal tape that came on the heatsinks. Cool

I didn't do a test going from the stock thick thermal pads, to the heatsinks with thermal tape. I was doing this upgrade on the Bonus Neptune, which came with NO thermal pads! By the time I modified that one regular cube (first link), I had already switched to using the epoxy.

Here's my full gallery if you want to browse through the rest: http://imgur.com/a/zQDSa

KnCMiner Firmware - Mercury/Saturn/Jupiter/Neptune/Titan
1548156876
Hero Member
*
Offline Offline

Posts: 1548156876

View Profile Personal Message (Offline)

Ignore
1548156876
Reply with quote  #2

1548156876
Report to moderator
1548156876
Hero Member
*
Offline Offline

Posts: 1548156876

View Profile Personal Message (Offline)

Ignore
1548156876
Reply with quote  #2

1548156876
Report to moderator
1548156876
Hero Member
*
Offline Offline

Posts: 1548156876

View Profile Personal Message (Offline)

Ignore
1548156876
Reply with quote  #2

1548156876
Report to moderator
PLAY NOW
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1548156876
Hero Member
*
Offline Offline

Posts: 1548156876

View Profile Personal Message (Offline)

Ignore
1548156876
Reply with quote  #2

1548156876
Report to moderator
1548156876
Hero Member
*
Offline Offline

Posts: 1548156876

View Profile Personal Message (Offline)

Ignore
1548156876
Reply with quote  #2

1548156876
Report to moderator
1548156876
Hero Member
*
Offline Offline

Posts: 1548156876

View Profile Personal Message (Offline)

Ignore
1548156876
Reply with quote  #2

1548156876
Report to moderator
wheelz1200
Legendary
*
Online Online

Activity: 1680
Merit: 1042



View Profile
October 19, 2015, 11:36:27 PM
 #41562

OK quick question.  I own one of these and one of my cubes is being a little finicky.  Any advise would be appreciated.  When I run the miner only one die seems to be working one cube 3, but as it mines, it switches dies which work???  So one minute die 1 will work and the other 3 wont and then after watching it for a couple of minutes die one goes off and die 4 works, etc, etc,...  Any clues, or anyone that has had this happen.  I have 3 titans and this is the only one that does that.  thanks in advance for any help.

███████████
██
██
██
██
██
██
██
██
██
██
██
███████████
#1
███████████
██
██
██
██
██
██
██
██
██
██
██
███████████
BTC 
  ●
   BTC
  BTC  
.
    ▄▄▄▀▀▀▀
 ▄██▀
███        ▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▄
▀███▄▄▄▄▀▀▀                 ▀▀▄▄
  ▀▀▀██████████████████████████▀
   ▄█▄     ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
    ▀▀██▄▄█▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▀▀
      ▄  ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
      ▀██▄  ▄▀▀▀▀▀▀▀▀▀▀▀▀▄
        ▀█▀██████████████▀▀
         ▀█▄▄ ▄▄▄▄▄▄▄▄▄▄
            █▀▄▄▄▄▄▄▄▄▄▄▀
             ▀▀▄▄▄▄▄▄▄
.
     BTC
  BTC   
  ●
  BTC  
███████████
██
██
██
██
██
██
██
██
██
██
██
███████████
███████████
██
██
██
██
██
██
██
██
██
██
██
███████████
TXSteve
Sr. Member
****
Offline Offline

Activity: 341
Merit: 250


View Profile
October 20, 2015, 12:16:30 AM
 #41563

Thanks for the mention TXSteve. Smiley

The one thing in that video that I wouldn't recommend doing more than once, is bending those ends down on the cube case. It got pretty flimsy the second time I did that and it completely broke off the third time! Sad KnC used some really cheap metal, which is even more aggravating considering what we paid for them, heh.

As TXSteve mentioned, taking the stickers off the VRMs is a good idea, especially if you use the thermal tape, like they did in the video.

GenTarkin, here's my before and after temps with the heatsinks and thermal epoxy/adhesive. http://i.imgur.com/2aE6f7S.jpg This is on a Neptune cube, but they are laid out the same. That hot VRM must be messed up or something, because it always runs really hot compared to all the rest of my cubes.

These also compare the different fans, KnC's supplied fans and the Noctua upgrade:
Copper Heatsinks with thermal tape: http://i.imgur.com/fcX9cp7.jpg
VS
Copper Heatsinks with thermal epoxy: http://i.imgur.com/yNIsXby.jpg
As you can see, the epoxy worked quite a bit better than the 3M thermal tape that came on the heatsinks. Cool

I didn't do a test going from the stock thick thermal pads, to the heatsinks with thermal tape. I was doing this upgrade on the Bonus Neptune, which came with NO thermal pads! By the time I modified that one regular cube (first link), I had already switched to using the epoxy.

Here's my full gallery if you want to browse through the rest: http://imgur.com/a/zQDSa

hey teslaman, good to see you -- you were putting out a lot of good info on modding these things back when there was very little if any other info to go on. Copper heatsinks, 2 part thermal epoxy, noctura fans, cutting the Eplate and probably a bunch of other stuff I forgot, were all originally his ideas. After doing and redoing a bunch of these thing I like to think I learned a few of my own tricks too, but he got the ball rolling. thx dude  Smiley
teslaman
Member
**
Offline Offline

Activity: 60
Merit: 10


View Profile
October 20, 2015, 02:51:54 AM
 #41564

hey teslaman, good to see you -- you were putting out a lot of good info on modding these things back when there was very little if any other info to go on. Copper heatsinks, 2 part thermal epoxy, noctura fans, cutting the Eplate and probably a bunch of other stuff I forgot, were all originally his ideas. After doing and redoing a bunch of these thing I like to think I learned a few of my own tricks too, but he got the ball rolling. thx dude  Smiley

Cheers man, much appreciated and you're most welcome! Smiley Indeed, I've no doubt that people have expanded on those ideas with even more improvements, which is what it's all about. Cool I'd like to try some more things, but I'm still working my way outta the hole this Neptune put me in, lol. Speaking of bitter (cold), way up north from you, I'm already switching over to using my miners for heat, brrrr! Seems like we completely skipped Fall up here.

KnCMiner Firmware - Mercury/Saturn/Jupiter/Neptune/Titan
Searing
Legendary
*
Offline Offline

Activity: 1974
Merit: 1071


Clueless!


View Profile
October 20, 2015, 06:18:53 AM
Last edit: October 20, 2015, 06:38:24 AM by Searing
 #41565

BTW, heres an interesting tidbit for yall, I think why many titans "dies end up dieing permanently" are infact because the DCDC modules burn out. After looking over the tech sheet, its easy to see why. If the ambient temp (surface temp of the inductor) reaches the 80-90's these are only rated for 25-30A to maintain their expected lifespan.
The fact some folks run them at these temps 24/7 and draw over 40A through them, its easy to see why the DCDC's would die ....

When vegas measured the temp of the inductor from the side, it measured about 55C , the webgui showed about just over 60C ... so there is a really small delta between the ambient temp & internal junction temp(webgui reading) of these DCDC's

Meaning, if ur webgui shows 90C area, the inductor is probably not far behind, most likely running in the low 80's ... which means nowhere near 40A should be pulled from the DCDC at that point.

What would be the safest Maximum DCDC temp setting on advance page of your mod regardless of the ambient temp? I currently set it at 90 and all dies run at 325, should I lower it?




Ultimately its up to the user and their preferences of how long they want the machine to potentially last.
Its hard to answer ur question definitively due to so many environment variables & operating conditions between cubes.
What everyone needs is a laser temp reader to take temperature checks of the inductor on the DCDC modules while its hashing. If its true that the inductor is generally within 10C of the webgui stat then a SAFE MAX temp @ 40A is... between 70 & 75C, so webgui stat should no higher than 80-85C.

Whats interesting is with more airflow these DCDC's are rated for more current safely at any given temp, even if the temp is the same vs less/no airflow.

For example, temp of inductor 80C @ no airflow is safe up to 34A.  80C @ 2-3m/s of airflow is safe up to 40A
At 100C inductor temp: 20A safe for no airflow, 30A safe for 3m/s of airflow

Another facet of max life from DCDC's is keeping them at their rated 40A max or lower. I know most of mine in the titan @ 325mhz are at 40-41A ... which I imagine aint bad, but I think around 43A ur starting to really push it. The actual Current limiting function of the DCDC's kicks in at 46A

This is the life expectancy of the DCDC's given everything is within spec:
MTBF at 90% confidence level = 11.52 Mh

So, safe bet would be to keep DCDC amperage at 40 or below if I wanted the cubes to last longer? I see at 325 some of them goes as high as 44.

Heh ..not even gonna look ...I have one cube with 2 dies runs hot as hell always has 325 mh all out.(since march 2015 when I got my 2nd unit)
.....i always expect it to burn out ....looked yesterday 90c plus as per usual
that was when I got the used unit...so all the cube goes full out.....at max 325 setting any other cube i throttle it back (or titan says no way) looked today
100 to 101c on the 1 die chugging merrily along...I am befuddled as always ..so that is what 8 months of full out wtf is going on ..then again it has been
11 months wtf is going on with the dies I have set to OFF its only fair I be confused the other way around Smiley

so again confused on what witchery is involved in this tried to tone it down last march the die would  not come back and previous attempts..but ..put it back at 325 setting etc and viola
bat out of hell since (highest producing die too ..heh figures)

so i only have 2 weeks left on my warranty so it will blow up 2 days after

but man i'm clueless as hell on how just plain 'weird' these units act from my own experiences and the folk's on here saying stuff

So I'm trying to go with the 'idea' (likely) as best I can recall in them 'heady' months when the Titan was expected to arrive on time and such

It was designed for 250mh .....the dc's etc components (power jacks) etc etc with the 'appropriate' over engineering for that 250mh unit

They figured out before shipping (w/o telling us imho) that the units were probably gonna ship late....so upped the hash from 250 to 300mh to
compensate for the lateness i suspect they saw coming (although to be fair I doubt they thought they'd be as late as they were) Again still within
the likely 'over engineering' on a 250mh design

They shipped......1st batch had bad dies..the firmware sucked with lots of errors etc...Initially I was told to mine at 300mh anything above that was
my own risk...the firmware ...buggy as hell for 2 months plus was not helping hash .even with LTC ...the hardware had the bad die issues..thus suddenly
when I had 2 bad dies on 2 diff cubes ..I was told to overclock it to 325 speed on adv page (ie ok by knc techs) so I did and it worked ok (with 2 off dies)

Side note: By the way I seem to remember the 1st firmware you could not even SET the speed above 300mh or am I incorrect? Anyone?

But then they changed the rules and said because my orig titan got 306.1 mh with 2 dead dies anything over 300mh they would not take back equip and
nor any cube with only 1 die off.....amazing how rules got changed. Again this was against their previous advice of 300mh was max.

So essentially to cover their ass on shoddy firmware and equip and lateness of shipping you were 'required' to overclock.... the F*ck out of your Titan
to get around their failed design/promises and ship date..thus burning a lot of stuff out early as you can see from the 'wreckage' of this thread over the last
year or so.....all risk on us!

to get to my POINT:

 IT IS IMHO A FRIGGING MIRACLE THAT ANY OF THESE TITANS THE WAY THEY WERE DESIGNED 'MANAGED' TO GET ABOVE 300MH FOR A YEAR! I JUST NEED
 TO DEAL WITH THAT 'REALITY' (ie KNC lied on what the product should do vs what it could do) Smiley

So trying to go with the flow...they are frigging overclocked to the max at 325mh adv page settings..so it is easier to limit my expections to reality then to try to figure out how to tweak
these units above 300mh when they already are in 'flaky mode' at probably 300mh ONLY ..from what they imho were designed for!

Got to admire that KNC 'evil genius' chutzpah thou! We have all the issues/risks/etc and they limit their problems with these units by a lot!

By the By I have 2 weeks left on my warranty ...anyone want to use me to swap a cube out to knc for their 200 bucks I'm trustworthy enough to do so
(then again with 2 weeks left they may just never send it back claiming it did not arrive even thou on the shelf..ie must remember the 'evil' we are talking about)

But we should have a mechanism on here to move cubes back thru trusted parties for folk who's warranty has already run out....I mean its not like they
did not play such games with us..the old razzle dazzle misdirection tricks... (then again send cube 200 buck fee....in say a month the knc tech is fired (or quits) due to his impending loss of a job...as the 12 month fix them requirement goes away)

hell probably should just send them to Vegas would be safer I guess ..just frosts my cookies for those with cubes as door stops as we speak because
it is already past 12 months and they are stuck......whatever just wool gathering on above Smiley





















 

 

█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
BitBlender 

 













 















 












 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 20, 2015, 04:08:49 PM
 #41566

BTW, heres an interesting tidbit for yall, I think why many titans "dies end up dieing permanently" are infact because the DCDC modules burn out. After looking over the tech sheet, its easy to see why. If the ambient temp (surface temp of the inductor) reaches the 80-90's these are only rated for 25-30A to maintain their expected lifespan.
The fact some folks run them at these temps 24/7 and draw over 40A through them, its easy to see why the DCDC's would die ....

When vegas measured the temp of the inductor from the side, it measured about 55C , the webgui showed about just over 60C ... so there is a really small delta between the ambient temp & internal junction temp(webgui reading) of these DCDC's

Meaning, if ur webgui shows 90C area, the inductor is probably not far behind, most likely running in the low 80's ... which means nowhere near 40A should be pulled from the DCDC at that point.

What would be the safest Maximum DCDC temp setting on advance page of your mod regardless of the ambient temp? I currently set it at 90 and all dies run at 325, should I lower it?




Ultimately its up to the user and their preferences of how long they want the machine to potentially last.
Its hard to answer ur question definitively due to so many environment variables & operating conditions between cubes.
What everyone needs is a laser temp reader to take temperature checks of the inductor on the DCDC modules while its hashing. If its true that the inductor is generally within 10C of the webgui stat then a SAFE MAX temp @ 40A is... between 70 & 75C, so webgui stat should no higher than 80-85C.

Whats interesting is with more airflow these DCDC's are rated for more current safely at any given temp, even if the temp is the same vs less/no airflow.

For example, temp of inductor 80C @ no airflow is safe up to 34A.  80C @ 2-3m/s of airflow is safe up to 40A
At 100C inductor temp: 20A safe for no airflow, 30A safe for 3m/s of airflow

Another facet of max life from DCDC's is keeping them at their rated 40A max or lower. I know most of mine in the titan @ 325mhz are at 40-41A ... which I imagine aint bad, but I think around 43A ur starting to really push it. The actual Current limiting function of the DCDC's kicks in at 46A

This is the life expectancy of the DCDC's given everything is within spec:
MTBF at 90% confidence level = 11.52 Mh

So, safe bet would be to keep DCDC amperage at 40 or below if I wanted the cubes to last longer? I see at 325 some of them goes as high as 44.

Heh ..not even gonna look ...I have one cube with 2 dies runs hot as hell always has 325 mh all out.(since march 2015 when I got my 2nd unit)
.....i always expect it to burn out ....looked yesterday 90c plus as per usual
that was when I got the used unit...so all the cube goes full out.....at max 325 setting any other cube i throttle it back (or titan says no way) looked today
100 to 101c on the 1 die chugging merrily along...I am befuddled as always ..so that is what 8 months of full out wtf is going on ..then again it has been
11 months wtf is going on with the dies I have set to OFF its only fair I be confused the other way around Smiley

so again confused on what witchery is involved in this tried to tone it down last march the die would  not come back and previous attempts..but ..put it back at 325 setting etc and viola
bat out of hell since (highest producing die too ..heh figures)

so i only have 2 weeks left on my warranty so it will blow up 2 days after

but man i'm clueless as hell on how just plain 'weird' these units act from my own experiences and the folk's on here saying stuff

So I'm trying to go with the 'idea' (likely) as best I can recall in them 'heady' months when the Titan was expected to arrive on time and such

It was designed for 250mh .....the dc's etc components (power jacks) etc etc with the 'appropriate' over engineering for that 250mh unit

They figured out before shipping (w/o telling us imho) that the units were probably gonna ship late....so upped the hash from 250 to 300mh to
compensate for the lateness i suspect they saw coming (although to be fair I doubt they thought they'd be as late as they were) Again still within
the likely 'over engineering' on a 250mh design

They shipped......1st batch had bad dies..the firmware sucked with lots of errors etc...Initially I was told to mine at 300mh anything above that was
my own risk...the firmware ...buggy as hell for 2 months plus was not helping hash .even with LTC ...the hardware had the bad die issues..thus suddenly
when I had 2 bad dies on 2 diff cubes ..I was told to overclock it to 325 speed on adv page (ie ok by knc techs) so I did and it worked ok (with 2 off dies)

Side note: By the way I seem to remember the 1st firmware you could not even SET the speed above 300mh or am I incorrect? Anyone?

But then they changed the rules and said because my orig titan got 306.1 mh with 2 dead dies anything over 300mh they would not take back equip and
nor any cube with only 1 die off.....amazing how rules got changed. Again this was against their previous advice of 300mh was max.

So essentially to cover their ass on shoddy firmware and equip and lateness of shipping you were 'required' to overclock.... the F*ck out of your Titan
to get around their failed design/promises and ship date..thus burning a lot of stuff out early as you can see from the 'wreckage' of this thread over the last
year or so.....all risk on us!

to get to my POINT:

 IT IS IMHO A FRIGGING MIRACLE THAT ANY OF THESE TITANS THE WAY THEY WERE DESIGNED 'MANAGED' TO GET ABOVE 300MH FOR A YEAR! I JUST NEED
 TO DEAL WITH THAT 'REALITY' (ie KNC lied on what the product should do vs what it could do) Smiley

So trying to go with the flow...they are frigging overclocked to the max at 325mh adv page settings..so it is easier to limit my expections to reality then to try to figure out how to tweak
these units above 300mh when they already are in 'flaky mode' at probably 300mh ONLY ..from what they imho were designed for!

Got to admire that KNC 'evil genius' chutzpah thou! We have all the issues/risks/etc and they limit their problems with these units by a lot!

By the By I have 2 weeks left on my warranty ...anyone want to use me to swap a cube out to knc for their 200 bucks I'm trustworthy enough to do so
(then again with 2 weeks left they may just never send it back claiming it did not arrive even thou on the shelf..ie must remember the 'evil' we are talking about)

But we should have a mechanism on here to move cubes back thru trusted parties for folk who's warranty has already run out....I mean its not like they
did not play such games with us..the old razzle dazzle misdirection tricks... (then again send cube 200 buck fee....in say a month the knc tech is fired (or quits) due to his impending loss of a job...as the 12 month fix them requirement goes away)

hell probably should just send them to Vegas would be safer I guess ..just frosts my cookies for those with cubes as door stops as we speak because
it is already past 12 months and they are stuck......whatever just wool gathering on above Smiley



At those temps Im surprised ur DCDC's have lasted as long as they have. Also, those arent DIE temps, there are no die temp measurements on these Titans, those are just internal temps of the DCDC's.
There is absolutely no way to detect internal temperature of the dies on Titan. Unless they have an undocumented thermistor somewhere in there LOL! ~ I doubt it.

Also, I have no idea what these units were originally supposed to be rated, but perhaps they were all supposed to be 5 cube units all along and they decided to take the cheap way out by shipping 4 cube units and telling everyone to OC. And yes u are right about early versions of firmware 300mhz was the max, the allowance of 325mhz is shown on github as a change to the spimux-titan.rbf file. Which is why I know the key to unlocking 350mhz is in that file =)

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
pumaro
Member
**
Offline Offline

Activity: 78
Merit: 10


View Profile
October 20, 2015, 09:17:45 PM
 #41567

Gentarkin, great job on the software btw, I am one of your donators Smiley you mention current above 40A being an issue can you make your software keep the settings in a "safe" range etc ?

GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 20, 2015, 11:27:01 PM
 #41568

Gentarkin, great job on the software btw, I am one of your donators Smiley you mention current above 40A being an issue can you make your software keep the settings in a "safe" range etc ?


I could but it would be largely pointless. Being a tad above 40A is not as dangerous as running these things at temperatures for which they arent rated to handle 40A. So, I think temps are much more important then going over the 40A by a bit. Hence, I would recommend the max temp of my DCDC threshold code to be set to 80 or 85C.

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
Searing
Legendary
*
Offline Offline

Activity: 1974
Merit: 1071


Clueless!


View Profile
October 21, 2015, 04:39:19 AM
Last edit: October 21, 2015, 05:04:26 AM by Searing
 #41569

Thanks for the mention TXSteve. Smiley

The one thing in that video that I wouldn't recommend doing more than once, is bending those ends down on the cube case. It got pretty flimsy the second time I did that and it completely broke off the third time! Sad KnC used some really cheap metal, which is even more aggravating considering what we paid for them, heh.

As TXSteve mentioned, taking the stickers off the VRMs is a good idea, especially if you use the thermal tape, like they did in the video.

GenTarkin, here's my before and after temps with the heatsinks and thermal epoxy/adhesive. http://i.imgur.com/2aE6f7S.jpg This is on a Neptune cube, but they are laid out the same. That hot VRM must be messed up or something, because it always runs really hot compared to all the rest of my cubes.

These also compare the different fans, KnC's supplied fans and the Noctua upgrade:
Copper Heatsinks with thermal tape: http://i.imgur.com/fcX9cp7.jpg
VS
Copper Heatsinks with thermal epoxy: http://i.imgur.com/yNIsXby.jpg
As you can see, the epoxy worked quite a bit better than the 3M thermal tape that came on the heatsinks. Cool

I didn't do a test going from the stock thick thermal pads, to the heatsinks with thermal tape. I was doing this upgrade on the Bonus Neptune, which came with NO thermal pads! By the time I modified that one regular cube (first link), I had already switched to using the epoxy.

Here's my full gallery if you want to browse through the rest: http://imgur.com/a/zQDSa


Hey I had a thought...has anyone been crazy enough to 'water cool' these Titans or Neptunes...that would be cool (and likely expensive) but man that would be
a cool youtube video Smiley

(I nominate TXSteve (Titan) and Telsaman..(Neptune)...  all those in favor...carries....hop right on that will you my good fellows..thanks ) Smiley


Gentarkin, great job on the software btw, I am one of your donators Smiley you mention current above 40A being an issue can you make your software keep the settings in a "safe" range etc ?


I could but it would be largely pointless. Being a tad above 40A is not as dangerous as running these things at temperatures for which they arent rated to handle 40A. So, I think temps are much more important then going over the 40A by a bit. Hence, I would recommend the max temp of my DCDC threshold code to be set to 80 or 85C.


my titan has all them temps beat ...at least this last summer.....the orig 2 dies on 2 cubes that I have OFF have been so since last winter. So the likely
too hot the way I ran them ..did not seem to (yet) have an effect.  Basement setup. lostgonzo.imgur.com Just using fans an airflow thru Basement.

Then again my Titans the orig and even the 2nd one probably (newbie on temp beg of summer) been run way to hot under what you know recommend. Kinda
glad I did not know this over the summer would have been freaking out. I thought 90c and below was OK.

The 2nd unit I got from a guy in Australia was run even harder before I even got it. Winter here is Summer there.

 The way I can tell from his cubes from my cubes is from the way the paint is flaking off the top....
...got that faded "sun blasted"  look....I'm sure it will bite me in the a*ss soon (short life) but whatever been lucky

whatever this is likely my last season of home mining anything ..this winter... anyway if it can hold together and beat elec price thru that season vs coin its a win imho!


Sigh ..I always thought this crypto mining hobby I got into in 2013 would have been a LOT funner with 4 guys and a co-op kinda arrangement..how i used to run a huge gamer BBS...4x the cash. 4x the equip 4x the size..and.someone always available when one of the sysop's cracked up and made a mad dash to throw the dos server off the roof. (ah good times drunk computer builds)

So I would be up to doing a lot of these mods and stuff..but away from the crypto mod herd ..all by my lonesome....little time...and the cowardice of being alone.

Well probably for the best a co-op of 4 buys in 2013 we would probably have been 'taken' by BFL and I'd have 4 less friends..but this stuff would be a hell of a lot more fun
with some more folk. (I've tried ....in upper midwest USA from what I can fathom ..if you do bitcoin..you are more 'evil' then a door to door Amway salesman) Smiley

But doing computer mods in my past was always with someone along the lines of 'are you sure you want to do this''wtf did we do wrong i can't get it back together'...and of course the classic ' well that did not work well at all..... we needed a new (? put device here) anyway I guess...er hand me another beer (we used that a lot) Smiley

Its not the KNC junk that bugs me on these projects..its the lack of the cooperative effort of others to get around such..ie locally here with the shared crypto viewpoint......so far out in the crypto sticks I am!


















 

 

█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
BitBlender 

 













 















 












 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 21, 2015, 05:54:27 AM
 #41570



Hey I had a thought...has anyone been crazy enough to 'water cool' these Titans or Neptunes...that would be cool (and likely expensive) but man that would be
a cool youtube video Smiley



Dumping that sorta $ & time into a project like water cooling titans .. is rather pointless and a waste lol!
Would have to make a custom block just for the dang VRM's and the ASIC. I dont even know if the ASIC runs that hot.
It consumes about 250w overclocked, highend video cards consume that much and have smaller heatsinks and are cooled just fine.

It would be nice to know the actual die temps of these things....guess we'll never find out LOL

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
TXSteve
Sr. Member
****
Offline Offline

Activity: 341
Merit: 250


View Profile
October 21, 2015, 09:35:27 AM
Last edit: October 21, 2015, 02:05:58 PM by TXSteve
 #41571

here you go searing   --   mineral oil cooled mining rig

https://www.youtube.com/watch?v=EpNERMxvPTk&feature=player_embedded

this actually might be feasible

-- run main supply & return tubing to an automotive radiator
-- put a larger circulator pump in the main loop to keep the oil moving
-- use a smaller pump for each cooling tank that taps into the main supply & return
-- set the PSU's above the tank on a rack
-- move the radiator outdoor in summer & indoor in winter

other videos show the psu in the mineral oil too, but that'd take a lot more work and  larger tanks.

I wonder how many cubes one radiator could handle?


GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 21, 2015, 02:53:01 PM
 #41572

UPDATE: will be releasing v.99e within a couple days, maybe even today =P

Features will include:
-groundwork code for multilanguage capability in webgui. Upon reboot after installing upgrade it will ask which language you want the webgui, only working & complete one is English for now
-chinese skeleton site, only includes the status page translated
-much more accurate wall watts
-ability to set your PSU's expected effeciency in SYSTEM tab which is used to calculate wall watts(defaults to 85%)
-more accurate cube power consumption in ADVANCED tab
-more modular code in monitoring script(which will give way to autotune someday =-) )



Future release:
Since I have the code in place to deal w/ the config file for voltage & clocks now, I will start coding some sort of autotune sometime =)
Im thinking initially it will only adjust voltages up and down a few notches by monitoring HW% error rate for each die in bfgminer and adjust voltage up/down accordingly. The maximum hw% Im gonna let a die have is 1% (overall hw% no greater than 2%) (based on my titan) .. Im not sure about the overall range of die hw% quality out there so a lot of this will require people willing to test the autotune.
Best(desired) clocks will still be required to be set by user.
There are lots of stuff to consider when tinkering w/ voltages automatically, such as per die DCDC current draw, per die DCDC temps, overall cube power draw, HW%, etc... this could get really complex really fast which is why Ive been putting it off =-P

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
Prelude
Legendary
*
Offline Offline

Activity: 1568
Merit: 1000



View Profile
October 21, 2015, 04:00:12 PM
 #41573

UPDATE: will be releasing v.99e within a couple days, maybe even today =P

Features will include:
-groundwork code for multilanguage capability in webgui. Upon reboot after installing upgrade it will ask which language you want the webgui, only working & complete one is English for now
-chinese skeleton site, only includes the status page translated
-much more accurate wall watts
-ability to set your PSU's expected effeciency in SYSTEM tab which is used to calculate wall watts(defaults to 85%)
-more accurate cube power consumption in ADVANCED tab
-more modular code in monitoring script(which will give way to autotune someday =-) )



Future release:
Since I have the code in place to deal w/ the config file for voltage & clocks now, I will start coding some sort of autotune sometime =)
Im thinking initially it will only adjust voltages up and down a few notches by monitoring HW% error rate for each die in bfgminer and adjust voltage up/down accordingly. The maximum hw% Im gonna let a die have is 1% (overall hw% no greater than 2%) (based on my titan) .. Im not sure about the overall range of die hw% quality out there so a lot of this will require people willing to test the autotune.
Best(desired) clocks will still be required to be set by user.
There are lots of stuff to consider when tinkering w/ voltages automatically, such as per die DCDC current draw, per die DCDC temps, overall cube power draw, HW%, etc... this could get really complex really fast which is why Ive been putting it off =-P

Looking forward to the update!

In regards to auto-tune, that's a good idea. I've done the tuning myself manually, also aiming to have no more than 1% HW errors per die. Once that's dialed in, I leave putty connected in screen to monitor for bfgminer restarts due to dies being un-restartable with your watchdog. When that happens, I bump the offending die's voltage a notch until it's completely stable. That leaves me with a 100% stable Titan at the lowest power consumption possible.

Here's what that looks like:



That's mining on nicehash in case you're wondering.
GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 21, 2015, 05:05:17 PM
 #41574

UPDATE: will be releasing v.99e within a couple days, maybe even today =P

Features will include:
-groundwork code for multilanguage capability in webgui. Upon reboot after installing upgrade it will ask which language you want the webgui, only working & complete one is English for now
-chinese skeleton site, only includes the status page translated
-much more accurate wall watts
-ability to set your PSU's expected effeciency in SYSTEM tab which is used to calculate wall watts(defaults to 85%)
-more accurate cube power consumption in ADVANCED tab
-more modular code in monitoring script(which will give way to autotune someday =-) )



Future release:
Since I have the code in place to deal w/ the config file for voltage & clocks now, I will start coding some sort of autotune sometime =)
Im thinking initially it will only adjust voltages up and down a few notches by monitoring HW% error rate for each die in bfgminer and adjust voltage up/down accordingly. The maximum hw% Im gonna let a die have is 1% (overall hw% no greater than 2%) (based on my titan) .. Im not sure about the overall range of die hw% quality out there so a lot of this will require people willing to test the autotune.
Best(desired) clocks will still be required to be set by user.
There are lots of stuff to consider when tinkering w/ voltages automatically, such as per die DCDC current draw, per die DCDC temps, overall cube power draw, HW%, etc... this could get really complex really fast which is why Ive been putting it off =-P

Looking forward to the update!

In regards to auto-tune, that's a good idea. I've done the tuning myself manually, also aiming to have no more than 1% HW errors per die. Once that's dialed in, I leave putty connected in screen to monitor for bfgminer restarts due to dies being un-restartable with your watchdog. When that happens, I bump the offending die's voltage a notch until it's completely stable. That leaves me with a 100% stable Titan at the lowest power consumption possible.

Here's what that looks like:



That's mining on nicehash in case you're wondering.

Very nice =) , yeah my titan is a bit picky, I have one die that has like a 2% rate no matter what voltage, I imagine there are others out there w/ the same situation, so those dies will be hard to account for. Ill have to code in something where if it keeps raising voltage w/ little hw% change then it will just revert the voltage to where it was... somehow lol

New firmware may make it out today, or tomorrow. Im awaiting test installs on someone elses titan. If anyone wants to volunteer shoot me an info. For those who have my btsync share , the release is already in there. Test as you please and let me know. Its so far, appeared to install fine on my titan, although since its my dev environment, its a bit different then everyone elses =P

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
pumaro
Member
**
Offline Offline

Activity: 78
Merit: 10


View Profile
October 21, 2015, 06:04:48 PM
 #41575

Thanks to KNC miner I got both of my controller boards working again, damn EVGA power supply literally smoked my boards, not knowing the cause of the issue I sent both controller boards back to KNC they repaired them sent them back and poof the damn power supply smoked my raspberry pi. This time I used a new power supply and luckily it only smoked the raspberry pi this time and I needed to reflash the card with gentarkin 99d and I was back in business.

Cant wait for the new 99E.

BTW Is everyone here on Prohashing.com ? Seems to be the best pool I have found for SCRYPT mining.... thoughts?

GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 21, 2015, 06:28:44 PM
 #41576

Thanks to KNC miner I got both of my controller boards working again, damn EVGA power supply literally smoked my boards, not knowing the cause of the issue I sent both controller boards back to KNC they repaired them sent them back and poof the damn power supply smoked my raspberry pi. This time I used a new power supply and luckily it only smoked the raspberry pi this time and I needed to reflash the card with gentarkin 99d and I was back in business.

Cant wait for the new 99E.

BTW Is everyone here on Prohashing.com ? Seems to be the best pool I have found for SCRYPT mining.... thoughts?

Dont let that secret out!!! LOL jk =P yeah I switched to it a week ago, the titan absolutely loves it. Best pool ever!

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
Mattzees
Full Member
***
Offline Offline

Activity: 121
Merit: 100


View Profile
October 22, 2015, 02:15:59 AM
Last edit: October 22, 2015, 02:34:27 AM by Mattzees
 #41577

I just started using .99e

BUG?: I had to specify ENGLISH for the language more than once.

Feature request:  Since multiple pools can be specified, it would be great if the Status page showed you what pool (or pools) your miner is connected to.  Obviously this has always been a problem since KNC's original firmware.

99e, so far, so good.
GenTarkin
Legendary
*
Offline Offline

Activity: 2310
Merit: 1000


View Profile
October 22, 2015, 05:04:30 AM
 #41578

I just started using .99e

BUG?: I had to specify ENGLISH for the language more than once.

Feature request:  Since multiple pools can be specified, it would be great if the Status page showed you what pool (or pools) your miner is connected to.  Obviously this has always been a problem since KNC's original firmware.

99e, so far, so good.

Hrm.... I dont know where that bug came from, the code for that is pretty simple. It sounds to me like maybe the firs time it just failed to save the preference to the file for w/e reason =/ ... so far noone else has reported this issue.

I can try to add that to a future release for the pool info readout on status page.

GenTarkin's MOD Kncminer Titan custom firmware! v1.0.4! <--- CLICK HERE
Donations: bitcoin- 1Px71mWNQNKW19xuARqrmnbcem1dXqJ3At || litecoin- LYXrLis3ik6TRn8tdvzAyJ264DRvwYVeEw
Searing
Legendary
*
Offline Offline

Activity: 1974
Merit: 1071


Clueless!


View Profile
October 22, 2015, 05:52:01 AM
Last edit: October 22, 2015, 06:03:16 AM by Searing
 #41579



Hey I had a thought...has anyone been crazy enough to 'water cool' these Titans or Neptunes...that would be cool (and likely expensive) but man that would be
a cool youtube video Smiley



Dumping that sorta $ & time into a project like water cooling titans .. is rather pointless and a waste lol!
Would have to make a custom block just for the dang VRM's and the ASIC. I dont even know if the ASIC runs that hot.
It consumes about 250w overclocked, highend video cards consume that much and have smaller heatsinks and are cooled just fine.

It would be nice to know the actual die temps of these things....guess we'll never find out LOL


The sad thing is if I had the time, I'd contact the EE dept and Mech Engineering dept and they could whip out such a water block etc for giggles...but don't have the time
to chase them down with pizza and beer (ie local mech engineering club and or ee club etc) God knows they have all the mnfg ability there to make a clone Titan imho!
(no really I think they have those 3D printers for circuit board thingys.. so we just have to get KNC to open source the Titans/Neptunes .right (lol fat frigging chance)

Anyway side note...if you do have a shot cube say wandering by your local university EE dept and finding the EE club.(if you have a local university) ..
...you might just be able to revive such a cube or issue on their good graces.

....if they think it is a 'cool' little project...but again ..like all hacks 'pizza and beer' would be required ...so I keep this in mind as my Titans pine for the sweet release
of becoming 'door stops"......it shall come...and if I look desperate enough I may have a shot...cubes in hand wandering the EE dept despondent Sad

anyway others in this thread with equipment... in a univ town with the above options may want to keep this in mind Smiley

(On the other hand a few years ago i got an apple //e from the 80's/90's that used to run an electron microscope for 'dapple' imaging..looks nothing like an apple //e
..It has all the books and stuff needed to fire it up ..it sits there waiting for the video/monitor feed once it boots looking for the electron microscope lol
...I asked the physics dept at the local univ if  they wanted to try that on their electron microscope for kicks....i got a resounding NO!
...go figure?)

On the other hand you look on ebay you sometimes see stuff like 'Electron Microscope' not currently working all manuals etc. for like 500 bucks or less. The status
is 'pick up" with lines like 'your expense to remove the wall and permits and use of the crane..etc) is a hoot! All stuff becomes doorstops it seems.

Anyway I was just asking if anyone HAD water cooled a Titan or Neptune maybe ..expense be damned....people do silly stuff like that ..so worth a shot


here you go searing   --   mineral oil cooled mining rig

https://www.youtube.com/watch?v=EpNERMxvPTk&feature=player_embedded

this actually might be feasible

-- run main supply & return tubing to an automotive radiator
-- put a larger circulator pump in the main loop to keep the oil moving
-- use a smaller pump for each cooling tank that taps into the main supply & return
-- set the PSU's above the tank on a rack
-- move the radiator outdoor in summer & indoor in winter

other videos show the psu in the mineral oil too, but that'd take a lot more work and  larger tanks.

I wonder how many cubes one radiator could handle?




Ah...did not see this previous post....I could 'hatch' a plan and drag the now defunct for making btc (but works fine) KNC Juptier to the local univ EE club etc and show
them this..they probably have the liquid stuff laying about...(er not mineral oil there is another fluid from other videos if I remember right now that you have jog'd my memory to 2013 using I think a 3m product?.....I know such exists ..probably causes cancer by reading the label....but they could have fun with such an experiment.not like I'd worry about them 'breaking' the knc jupiter as a 'lost' miner due to difficulty vs electricity now. Then if it worked..you could 'hatch' the evil Titan plot below (evil laugh here brhahahahaha)

Whet their appetite .....assuming we got it to work on a Jupiter Die....then I could continue my evil plan and off hand say...by the by I have a current miner...Titan
perhaps we should use this as a real world test make a video.....(ah evil plans have to love it)

Might not work..they likely would just call security ..but still......the real trick would be using 'univ elec' and forgetting to mention its mining to my address (naw ...I'm
not KNC ..a slippery slope what?...) Gee guys that looks cool you should just put the whole works in this 'display case' over here and we can see how long it runs...whatcha say?

(I am beginning to sense now how KNC got taken over by the 'dark side of the asic force" Smiley The 'dark side' is 'seductive and strong' dont' ya know Smiley














 

 

█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
BitBlender 

 













 















 












 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
█ 
TXSteve
Sr. Member
****
Offline Offline

Activity: 341
Merit: 250


View Profile
October 22, 2015, 10:21:25 AM
 #41580

A guy in one of the videos mentioned an Ideal liquid for submersive cooling that was like 200$/gal. Had better thermal transfer qualities than mineral oil, and was inert. Mineral oil is pretty cheap if you get it in 5 gal pail. The whole thing is probably pretty cheap. For me the real problem is it's so messy, like if you have to pull the cube out to work on it. But Y connectors probably last forever. I also think it's interesting how they run the fans "underwater", no problem.

It's still in the back of my mind
Pages: « 1 ... 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 [2079] 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 ... 2139 »
  Print  
 
Jump to:  

Bitcointalk.org is not available or authorized for sale. Do not believe any fake listings.
Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!