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News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
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Author Topic: Swedish ASIC miner company kncminer.com  (Read 3008018 times)
rrrix
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October 11, 2013, 07:57:06 PM
 #15061

My Jupiter is scheduled for delivery today. Of course I bought a Corsair HX850 - is there any *safe* way to use it, or should I not even plug the thing in?

What if I power on the HX850 and plug in the PCI-E connectors one at a time?
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October 11, 2013, 07:58:28 PM
 #15062


Again Bertmod measures VRM temp, not ASIC.

The official firmware status page temp is also from VRM?

 HW status:

ASIC slot #1: 54.0 ℃
ASIC slot #2: 53.0 ℃
ASIC slot #3: 55.0 ℃
ASIC slot #4: 43.0 ℃
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October 11, 2013, 07:58:45 PM
 #15063



WTF?! How can one determine an issue they don't know is an issue, until it becomes an issue??




It is called testing.  Which was absent after taking off the 4 VRMs.   Why can't you admit that they should of tested that decision, found the issues that us customers had to point out, created the firmware, test it again, THEN ship with 4 VRMs?

And where are any testing results, metrics from .95?  Where are the before / after numbers?

Because you wanted boards hashing ASAP, and got them.

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chrono030
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October 11, 2013, 07:59:00 PM
 #15064

My Jupiter is scheduled for delivery today. Of course I bought a Corsair HX850 - is there any *safe* way to use it, or should I not even plug the thing in?

What if I power on the HX850 and plug in the PCI-E connectors one at a time?


Don't plug it in.  Go buy something else at your local electronics store.  It will pay for itself in 24 hours.  You do NOT want a downed machine currently.

Also - .95 seems to be working very well for me:

 (5s):585.5G (avg):556.7Gh/s | A:65024  R:512  HW:3533  WU:7784.1/m
DPoS
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October 11, 2013, 08:00:43 PM
 #15065


And here he's correct.  If the VRM is designed to withstand 100 C, cooling it from 80 to 40 makes no difference.  

Do you read before trolling???  the chips are rated for 100C not the VRMs

but even regarding the chips, just because it can work at 100C ...  oh never mind.. back to ignore

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October 11, 2013, 08:01:08 PM
 #15066

My Jupiter is scheduled for delivery today. Of course I bought a Corsair HX850 - is there any *safe* way to use it, or should I not even plug the thing in?

What if I power on the HX850 and plug in the PCI-E connectors one at a time?


JESUS

I have absolutely no idea how people with this amount of experience find themselves buying these devices.  Really?
DeathAndTaxes
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October 11, 2013, 08:01:35 PM
 #15067

And here he's correct.  If the VRM is designed to withstand 100 C, cooling it from 80 to 40 makes no difference.  

Well it depends.  No device is fine at 99.99999C and then explodes at 100C.  The hotter a component gets the less efficient it becomes that means more current is needed and more current means more heat which means higher temps, which means lower efficiency .... and the cycle goes on. 

All the problems seem to be limited to the rushed "lets cut the number of VRMs in half" mid production modification version.  If the 4 VRM version (doing the job of 8 VRM as designed) is running at high load then even a modest amount of cooling could improve performance.  Not saying that IS the case just pointing out it could be.
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October 11, 2013, 08:01:56 PM
 #15068


Again Bertmod measures VRM temp, not ASIC.

The official firmware status page temp is also from VRM?

 HW status:

ASIC slot #1: 54.0 ℃
ASIC slot #2: 53.0 ℃
ASIC slot #3: 55.0 ℃
ASIC slot #4: 43.0 ℃

Not on die, but on the PCB, underneath chip - temp sensor hence ~50 degrees celcius.

Really no desktop fans required, honestly.

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DPoS
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October 11, 2013, 08:02:25 PM
 #15069



Because you wanted boards hashing ASAP, and got them.

Then why not leave the 8 VRMs on for that point??

why are you dodging that?  what was the main gain for everyone on taking off the 4 VRMs??   You could keep shipping with 8 until you tested taking off 4.. .how can you try to keep avoiding this logic?

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ElGabo
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October 11, 2013, 08:03:07 PM
 #15070

Guys

0.95 is magic

from 500 Ghs to 560

from 25%HW error to 3%

Good job KNC

I made a good decision

 Smiley

" I'm waiting for my punishment, I know it's on my way
  So cut, cut, cut me up and fuck, fuck, fuck me up"
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October 11, 2013, 08:03:25 PM
 #15071

My Jupiter is scheduled for delivery today. Of course I bought a Corsair HX850 - is there any *safe* way to use it, or should I not even plug the thing in?

What if I power on the HX850 and plug in the PCI-E connectors one at a time?

Plug the PCI-E while powered on? Are you looking to fry something?

_HashFast Technologies_28 nm mining
Producer of High Performance ASICS
BabyJets & Sierras On Sale today!
timmmers
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October 11, 2013, 08:03:57 PM
 #15072



WTF?! How can one determine an issue they don't know is an issue, until it becomes an issue??




It is called testing.  Which was absent after taking off the 4 VRMs.   Why can't you admit that they should of tested that decision, found the issues that us customers had to point out, created the firmware, test it again, THEN ship with 4 VRMs?

And where are any testing results, metrics from .95?  Where are the before / after numbers?

Because you wanted boards hashing ASAP, and got them.

A lot of people (even hosted) would barely agree with that if at all. A lot of people have got nothing at all.
The Avenger
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October 11, 2013, 08:04:25 PM
 #15073

We all bought an unrefined product did we? Odd, I didn't see those words or anything like that when I paid for mine.
Not in any of the back patting videos or interviews either.

We bought a miner that we were told confidently would have margins upon margins capable of 400Gh and even today no-one has said that this (and the oct 15th date) has changed. Except of course to up it to 550 on the site and most promos ...which currently is false advertising ..as the past 20 pages here bear witness to.

As for all this shite about power consumption...right now is that a big priority to get down? I'd rather have a hashing rig while it's making enough BTC to make a few quid power bill extra irrelevent..later on the power consumption will matter more but not initially compared to a working rig. As long as the PSU handles it, we can wait for a firmware fix to get it down. Hashing reliably without smoke is the priority for users.

The sarcastic tone of Oramas post amazed me, people using fans to reduce temps ..planking? It worked. How bizarre is that? More to the fucking point no-one was talking from KNC end despite much asking...so what else were people to do? "We have a specialist flying in and we'll get back to you as soon as we know something."  < see, took me 3 seconds to type that, and even some poor sweaty overworked KnC human could manage that surely?

The way to deal with trainwrecks like this isn't arrogance, sarcasm and silence ..it's communication and apologies and in many cases here where buyers have been so badly let down with multi hosted jupiters...fair compensation.

I wont deal with KnC again, nothing to do with the rigs, it's the denial and head in the sand stuff I can't be living with.

+100000
Totally.

"I am not The Avenger"
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Bitcoinorama
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October 11, 2013, 08:05:18 PM
 #15074



Because you wanted boards hashing ASAP, and got them.

Then why not leave the 8 VRMs on for that point??

why are you dodging that?  what was the main gain for everyone on taking off the 4 VRMs??   You could keep shipping with 8 until you tested taking off 4.. .how can you try to keep avoiding this logic?

I'm not dodging anything. They were an excessive margin that is of no use now, why would you not cut back on unnecessary components, when proven unrequited to perform optimal? Makes no sense. Why not add 4 extra wheels to your car because you can?!

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DeathAndTaxes
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October 11, 2013, 08:05:44 PM
 #15075

Then why not leave the 8 VRMs on for that point??

why are you dodging that?  what was the main gain for everyone on taking off the 4 VRMs??   You could keep shipping with 8 until you tested taking off 4.. .how can you try to keep avoiding this logic?

Simple.  KNC chose to use an off the shelf power module.  This means rapid prototyping but it also means higher cost.  Those modules run $25 each.  8 per board means $200 per board in cost just for the power supply.  That is $800 per Jupiter.  If they leave 4 of them off that is an extra $400 in profit per unit.  1500 units @ $400 ea = $600,000.

There is absolutely no other reason to change the extensively designed, tested and fully operational boards right in the middle of peak production.
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October 11, 2013, 08:06:42 PM
 #15076

I'm not dodging anything. They were an excessive margin that is of no use now, why would you not cut back on unnecessary components, when proven unrequited to perform optimal? Makes no sense. Why not add 4 extra wheels to your car because you can?!

The car was designed to use 4 wheels.  Adding 4 wheels or removing 3 of them IN production would be equally stupid.  Glad you agree.

The time for version 2 is once orders have shipped and the new CHEAPER (which benefits KNC not customers) 4 VRM version is extensively tested.   Not on the fly right in the middle of production.  You know that.  There is absolutely no reason to switch in production.  Nobody is saying 8 VRMs today, 8 VRMS tomorrow 8 VRMS forevers but the board was designed, simulated, and tested one way.  Then at the last minute the margins upon margins where chopped off with minimal testing.   Oops it turned out to be a bad idea.
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October 11, 2013, 08:07:34 PM
 #15077

And O'rama!

Thaks a lot for your good work.

I love you fuckin much

Smiley

" I'm waiting for my punishment, I know it's on my way
  So cut, cut, cut me up and fuck, fuck, fuck me up"
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October 11, 2013, 08:08:57 PM
 #15078

My Jupiter is scheduled for delivery today. Of course I bought a Corsair HX850 - is there any *safe* way to use it, or should I not even plug the thing in?

What if I power on the HX850 and plug in the PCI-E connectors one at a time?


Don't plug it in.  Go buy something else at your local electronics store.  It will pay for itself in 24 hours.  You do NOT want a downed machine currently.

Also - .95 seems to be working very well for me:

 (5s):585.5G (avg):556.7Gh/s | A:65024  R:512  HW:3533  WU:7784.1/m


Did I miss something?  What is wrong with his PSU?  This thread is moving too fast.
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October 11, 2013, 08:10:03 PM
 #15079

Then why not leave the 8 VRMs on for that point??

why are you dodging that?  what was the main gain for everyone on taking off the 4 VRMs??   You could keep shipping with 8 until you tested taking off 4.. .how can you try to keep avoiding this logic?

Simple.  KNC chose to use an off the shelf power module.  This means rapid prototyping but it also means higher cost.  Those modules run $25 each.  8 per board means $200 per board in cost just for the power supply.  That is $800 per Jupiter.  If they leave 4 of them off that is an extra $400 in profit per unit.  1500 units @ $400 ea = $600,000.

There is absolutely no other reason to change the extensively designed, tested and fully operational boards right in the middle of peak production.

manufacturing time... takes less time to mount 4 converters than 8....times that by about ten thousand boards....


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October 11, 2013, 08:11:16 PM
 #15080

Just wanted to echo what everyone else is saying as well.  New 0.95 firmware is a huge upgrade.

My Saturn was running at ~210 Gh/s for the last few days, 10-12% hardware errors, 70C temp.  New firmware its running at ~300 Gh/s (only been 30 min), less than 1% HW errors, and 45-50C temp.
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