GridSeed 5-chip USB miner voltage mod

[ZiG]

I think the gridseed could possibly handle the first mod (bridge + voltage=1 in command line) to reach 1000Mhz and dual mine.  I don't think I'd push it farther than that though.  I tried the dual mining mode on mine with the resistor mod.  The Ubiq m3022m mosfet on mine blew the instant dual mining kicked in.  That part is a real bugger to find in the US, but luckily I was able to cross-reference a part from TI (CSD17552Q5A N-Ch 30v mosfet) that met most of the original specs and it's back up and running now at the 1225Mhz scrypt only.

As far as I know, I'm not getting .1ltc a day either, just a little less actually.  I've been using Clevermining and just switched to Multipool to try them out since they have Cryptsy integration.  In the past 15 days I've gotten 0.02552966 BTC from Clevermining.  I only have the single gridseed plus an nvidia gtx 560se (98kh/s).  My ati card bit the dust unfortunately.

I did full vmod 1 on one gridseed and am testing dual mode now.  Cgminer in BTC mode seems to handle 1000Mhz.  I did not test 1000Mhz long though as I wanted dual mode results.  I have to clock everything down to 850Mhz to get cpuminer happily mining LTC at the same time.  900Mhz was too high for cpuminer.  Cgminer 3.8.5 has 50Mhz frequency increases so maybe 875Mhz would work but it is not in the options.  Everything looks stable at 850Mhz in dual mode with vmod 1 in place. 

Preliminary results indicate 9.5 Ghash BTC and 350 Khash LTC poolside.  That puts the performance right in between vmod 3 @ 500 khash single mode and vmod 1 @ 400 khash single mode.  I calculate (for me) that vmod1 dual would give 12% lower performance than vmod 3 and that vmod1 dual would give 11% higher performance than vmod 1 single.  That's all based on today's difficulty and prices and my power costs.

66 watts power consumption - to anyone who really understands this stuff; do I need to concerned about that?  Will it shorten the life of the gridseed?  That's approx 1 amp more than dual mode with no voltage mod (my other gridseeds).

Good job, Happydaze ...!

Thank you for sharing your findings and results...

Do you think that dual mining is viable...?

ZiG

[1715427598]

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[1715427598]

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[happydaze]

It's an option if you don't have a lot of gridseeds, maybe no more than 20, because of the power consumption.  In my comparisons I was only looking at LTC & BTC.  There are lots of Scrypt coins doing better so focusing on them would probably give you much better results long term.  I've almost convinced myself to switch to Scrypt only and do vmod 3.  I just like the idea of dual mining - hard to let it go. Also, I don't like that I don't have the skills to undue vmod 3.  I'll always have an axial type resistor there if I do it.  There's no way I could solder the type of resistor that is on the board now.  It is incredibly small.  I can undue the bridges easily enough. 

We need some opinions from the electronics gurus here re: the 66 watts used and long term use.  The gridseed is hardly warm. I'd guess low 20's Celsius.  It's actually cooler than one of my older gridseeds even though the power consumption is higher.

[gtraah]

Yes, pot is short for Potentiometer which is a variable resistor.  If I had 50k worth of "pot" I wouldn't be concerned about modding a gridseed

The physical switch is definitely possible.  It wouldn't really be all that hard either I don't think.  The software parameter is the real interesting one I think. 

HAHA! bro id light me up some and end up turning on the tv... be like 361kh is alright for me ~ too smashed to even attempt to mod it..

Ok so the POTS 50K resistor is to go in the vmod 1 position? not the vmod 3 position? correct? as it is variable? just trying to wrap my head around these mods and the meaning behind them.

Also do you think this will work ok? to save power by only have 1 fan per 2 pod?  https://www.dropbox.com/s/8q278fnjgzd18hj/mash2.png Obviously its a photo edit, not real. but i am just thinking if I have one of the boards backing the fan it may block the airflow to the other board below , hmm maybe not a good idea, unless you some how stick the fan on the side but that would look shit lol

What are you going doing for power when you have them modded? currently i would like to have 10 grids per PCIE 6 PIN is this still a viable option when they are v3modded?

@ HappyDAze
Thanks Happy!, I think the most ROI option wold be to do Vmod 3 not dont even think about reversing it , unless someone else makes the SuperVmod, which gives you the option to switch from vmod3 even then unless you really love dual mining like yourself I don't think there is any reason to flip the switch ...

[mintyfresh]

@ HappyDAze
Thanks Happy!, I think the most ROI option wold be to do Vmod 3 not dont even think about reversing it , unless someone else makes the SuperVmod, which gives you the option to switch from vmod3 even then unless you really love dual mining like yourself I don't think there is any reason to flip the switch ...

Exactly what I think.  And this is too beautiful - why switch to dual mode?  No looking back for me...

 GSD  0: 6D87257F5650 1200 MHz | 508.4K/512.7Kh/s | A:2816 R:0 HW:0 WU: 39.6/m
 GSD  1: 6D80538C5650 1200 MHz | 508.2K/512.7Kh/s | A:2180 R:0 HW:0 WU: 35.2/m
 GSD  2: 6D8D369C5650 1200 MHz | 508.4K/512.6Kh/s | A:2764 R:0 HW:0 WU: 41.5/m
 GSD  3: 6D8E40594857 1200 MHz | 508.3K/513.2Kh/s | A:2640 R:0 HW:0 WU: 40.4/m
 GSD  4: 6D8415984857 1200 MHz | 508.4K/512.7Kh/s | A:2316 R:0 HW:1 WU: 34.9/m
 GSD  5: 6D80489F5650 1200 MHz | 508.2K/512.6Kh/s | A:3188 R:0 HW:1 WU: 47.0/m
 GSD  6: 6D7A375C5148 1200 MHz | 508.4K/512.8Kh/s | A:2604 R:0 HW:0 WU: 37.0/m
 GSD  7: 6D9534725251 1200 MHz | 508.4K/512.8Kh/s | A:2484 R:0 HW:1 WU: 38.4/m
 GSD  8: 6D91277E4853 1200 MHz | 508.3K/511.2Kh/s | A:2604 R:0 HW:0 WU: 36.0/m
 GSD  9: 6D8D35AC5650 1200 MHz | 508.5K/512.8Kh/s | A:2612 R:0 HW:1 WU: 37.6/m
--------------------------------------------------------------------------------

[gtraah]

@ HappyDAze
Thanks Happy!, I think the most ROI option wold be to do Vmod 3 not dont even think about reversing it , unless someone else makes the SuperVmod, which gives you the option to switch from vmod3 even then unless you really love dual mining like yourself I don't think there is any reason to flip the switch ...

Exactly what I think.  And this is too beautiful - why switch to dual mode?  No looking back for me...

 GSD  0: 6D87257F5650 1200 MHz | 508.4K/512.7Kh/s | A:2816 R:0 HW:0 WU: 39.6/m
 GSD  1: 6D80538C5650 1200 MHz | 508.2K/512.7Kh/s | A:2180 R:0 HW:0 WU: 35.2/m
 GSD  2: 6D8D369C5650 1200 MHz | 508.4K/512.6Kh/s | A:2764 R:0 HW:0 WU: 41.5/m
 GSD  3: 6D8E40594857 1200 MHz | 508.3K/513.2Kh/s | A:2640 R:0 HW:0 WU: 40.4/m
 GSD  4: 6D8415984857 1200 MHz | 508.4K/512.7Kh/s | A:2316 R:0 HW:1 WU: 34.9/m
 GSD  5: 6D80489F5650 1200 MHz | 508.2K/512.6Kh/s | A:3188 R:0 HW:1 WU: 47.0/m
 GSD  6: 6D7A375C5148 1200 MHz | 508.4K/512.8Kh/s | A:2604 R:0 HW:0 WU: 37.0/m
 GSD  7: 6D9534725251 1200 MHz | 508.4K/512.8Kh/s | A:2484 R:0 HW:1 WU: 38.4/m
 GSD  8: 6D91277E4853 1200 MHz | 508.3K/511.2Kh/s | A:2604 R:0 HW:0 WU: 36.0/m
 GSD  9: 6D8D35AC5650 1200 MHz | 508.5K/512.8Kh/s | A:2612 R:0 HW:1 WU: 37.6/m
--------------------------------------------------------------------------------

Wow.. what a beautiful site... is this the 49.9K or the 47.k?

and at what freq?

HURRY UP PUBLIC HOLIDAYS will you end already I have stuff waiting to arrive in the post and they will not come because of these holidays, I mean I do love a holiday but I would of loved to have it after I got my stuff lol

EDIT: DOHH Ignore my freq question its ifront of my face --- 1200mhz

[cmilian]

Why am I getting an average of 550 KH/s at the mining pool if I have this setup after OC?

 Block: ...ae7b1605 # 38916  Diff:16 (125.7Mh/s)  Started: [02:45:01]
 ST:6  F:0  NB:17  AS:0  BW:[ 19/ 11 B/s]  E:0.01  I: 1.23 BTC/hr  BS:0
 2            | 966.3/988.3/503.4kh/s | A:139 R:4+0(none) HW:4/none
-------------------------------------------------------------------------------
 GSD 0:       | 495.8/493.9/245.2kh/s | A: 66 R:2+0(none) HW:0/none
 GSD 1:       | 495.8/492.9/265.2kh/s | A: 75 R:2+0(none) HW:0/none


Is this an issue with my miners or is an issue at the Pool?

Thanks in advance for your input guys!

[mintyfresh]

@ HappyDAze
Thanks Happy!, I think the most ROI option wold be to do Vmod 3 not dont even think about reversing it , unless someone else makes the SuperVmod, which gives you the option to switch from vmod3 even then unless you really love dual mining like yourself I don't think there is any reason to flip the switch ...

Exactly what I think.  And this is too beautiful - why switch to dual mode?  No looking back for me...

 GSD  0: 6D87257F5650 1200 MHz | 508.4K/512.7Kh/s | A:2816 R:0 HW:0 WU: 39.6/m
 GSD  1: 6D80538C5650 1200 MHz | 508.2K/512.7Kh/s | A:2180 R:0 HW:0 WU: 35.2/m
 GSD  2: 6D8D369C5650 1200 MHz | 508.4K/512.6Kh/s | A:2764 R:0 HW:0 WU: 41.5/m
 GSD  3: 6D8E40594857 1200 MHz | 508.3K/513.2Kh/s | A:2640 R:0 HW:0 WU: 40.4/m
 GSD  4: 6D8415984857 1200 MHz | 508.4K/512.7Kh/s | A:2316 R:0 HW:1 WU: 34.9/m
 GSD  5: 6D80489F5650 1200 MHz | 508.2K/512.6Kh/s | A:3188 R:0 HW:1 WU: 47.0/m
 GSD  6: 6D7A375C5148 1200 MHz | 508.4K/512.8Kh/s | A:2604 R:0 HW:0 WU: 37.0/m
 GSD  7: 6D9534725251 1200 MHz | 508.4K/512.8Kh/s | A:2484 R:0 HW:1 WU: 38.4/m
 GSD  8: 6D91277E4853 1200 MHz | 508.3K/511.2Kh/s | A:2604 R:0 HW:0 WU: 36.0/m
 GSD  9: 6D8D35AC5650 1200 MHz | 508.5K/512.8Kh/s | A:2612 R:0 HW:1 WU: 37.6/m
--------------------------------------------------------------------------------

Wow.. what a beautiful site... is this the 49.9K or the 47.k?

and at what freq?

HURRY UP PUBLIC HOLIDAYS will you end already I have stuff waiting to arrive in the post and they will not come because of these holidays, I mean I do love a holiday but I would of loved to have it after I got my stuff lol

EDIT: DOHH Ignore my freq question its ifront of my face --- 1200mhz

It's the 49.9k.  I used 49.9k ceramic 1% axial resistors.

[happydaze]

An update on vmod 1 dual mining.  Everything is still running, nothing quit overnight.   12 hour BTC average is higher than I expected at 10.2 GH/s on the one vmodded gridseed.  I have to wait until tonight to see what the 24 hour LTC results are.

If someone could take a look at cgminer 3.8.5 for gridseeds and add some frequency options in between 850Mhz and 900Mhz then dual mining might actually get really close to the performance of vmod 3 scrypt only.  If you have to cool your mining room then this option is not for you.  I have to heat my basement for basic comfort so some of my power costs are recouped.  In the room where my gridseeds are the heat hasn't come on in weeks with the thermostat set at 18C.  The room is a steady 19C with the 300+ watts used by the 5 gridseeds I have.  Elsewhere in the basement, with individual thermostats set at 18C all heaters are still in use showing 1 or 2 bars out of 5 possible on the thermostats.  A benefit of living in a cold climate I guess.

Any gains now will come from the software side: more frequency options are needed between 850Mhz and 900Mhz for fine tuning and, if the voltage option was built into the software, then only one solder bridge would be needed.

Edit: cgminer quit after 14 hours or so and I wasn't around to catch it.  Not unexpected with dual mode.  I was running the test gridseed by itself but as my 24 test was now pointless I just plugged that gridseed back into the hub with its brothers @ 750Mhz.  Power consumption dropped 10 watts @ 750Mhz compared to 850Mhz.

You have to use something like cgwatcher or a batch file like this: https://bitcointalk.org/index.php?topic=330027.0 to keep cgminer 3.8.5 continuously running in dual mode it seems.

[sandor111]

https://github.com/siklon/usb-miner/tree/master/software/cpuminer

Short summary:
* Added hashrate statistics
* Added auto per-chip frequency tuning
* Added JSON API at port 4028 -> send {"get":"stats"} to get stats for each miner/chip
* Input any frequency you want

Code:

-G, --gc3355=DEV0,DEV1,...,DEVn      enable GC3355 chip mining mode (default: no)
  -F, --freq=FREQUENCY  set GC3355 core frequency in NONE dual mode (default: 600)
  -f, --gc3355-freq=DEV0:F0,DEV1:F1,...,DEVn:Fn      individual frequency setting
  -A, --gc3355-autotune  auto overclocking each GC3355 chip (default: no)

It should work on Rpi, but I haven't tested it yet.

[nst6563]

https://github.com/siklon/usb-miner/tree/master/software/cpuminer

Short summary:
* Added hashrate statistics
* Added auto per-chip frequency tuning
* Added JSON API at port 4028 -> send {"get":"stats"} to get stats for each miner/chip
* Input any frequency you want

Code:

-G, --gc3355=DEV0,DEV1,...,DEVn      enable GC3355 chip mining mode (default: no)
  -F, --freq=FREQUENCY  set GC3355 core frequency in NONE dual mode (default: 600)
  -f, --gc3355-freq=DEV0:F0,DEV1:F1,...,DEVn:Fn      individual frequency setting
  -A, --gc3355-autotune  auto overclocking each GC3355 chip (default: no)

It should work on Rpi, but I haven't tested it yet.

Awesome!  Are there Windows binaries available?  I've attempted to build them in the past but always seem to run into some errors.

[gtraah]

https://github.com/siklon/usb-miner/tree/master/software/cpuminer

Short summary:
* Added hashrate statistics
* Added auto per-chip frequency tuning
* Added JSON API at port 4028 -> send {"get":"stats"} to get stats for each miner/chip
* Input any frequency you want

Code:

-G, --gc3355=DEV0,DEV1,...,DEVn      enable GC3355 chip mining mode (default: no)
  -F, --freq=FREQUENCY  set GC3355 core frequency in NONE dual mode (default: 600)
  -f, --gc3355-freq=DEV0:F0,DEV1:F1,...,DEVn:Fn      individual frequency setting
  -A, --gc3355-autotune  auto overclocking each GC3355 chip (default: no)

It should work on Rpi, but I haven't tested it yet.

I wish somebody would work on [Cgminer-Windows] properly By far when working this is the best miner out there, been proven with GPUs

[cmilian]

Here is Mine, Is this good? Just the one resistor replaced with a 49. at 1200 Mhz.  Am I pushing too hard> will I damage my Gridseeds?


 2            |  1.04/ 1.02/ 0.54Mh/s | A:115 R:5+0(none) HW:0/none
--------------------------------------------------------------------
 GSD 0:       | 510.6/502.5/261.7kh/s | A: 56 R:3+0(none) HW:0/none
 GSD 1:       | 510.6/500.3/283.9kh/s | A: 61 R:2+0(none) HW:0/none

I noticed that My Miners are accepting more when they are just starting. Could this be a signal telling us that I need to lower frequency? Or is this a Mining Pool issue?

[happydaze]

Which mod is Volt Mod 3, again?

It's the mod nemercry came up with https://bitcointalk.org/index.php?topic=519112.msg6021433#msg6021433

I had an email from Gawminers two days ago for $99 gridseeds bought individually and I bought a four pack from them @ $97.50 each with free shipping so watch for specials.  Better to buy more gridseeds I think now that prices are low if DIY is not an option.

[gtraah]

Here is Mine, Is this good? Just the one resistor replaced with a 49. at 1200 Mhz.  Am I pushing too hard> will I damage my Gridseeds?


 2            |  1.04/ 1.02/ 0.54Mh/s | A:115 R:5+0(none) HW:0/none
--------------------------------------------------------------------
 GSD 0:       | 510.6/502.5/261.7kh/s | A: 56 R:3+0(none) HW:0/none
 GSD 1:       | 510.6/500.3/283.9kh/s | A: 61 R:2+0(none) HW:0/none

I noticed that My Miners are accepting more when they are just starting. Could this be a signal telling us that I need to lower frequency? Or is this a Mining Pool issue?

DOnt look at the pool, if you have been mining for awhile you will know dont even bother, pools are never accurate.

I only ever trust the miner, Cgminer is great for checking accepted, Rejected, WU shares, Hashrate.

[cmilian]

Here is Mine, Is this good? Just the one resistor replaced with a 49. at 1200 Mhz.  Am I pushing too hard> will I damage my Gridseeds?


 2            |  1.04/ 1.02/ 0.54Mh/s | A:115 R:5+0(none) HW:0/none
--------------------------------------------------------------------
 GSD 0:       | 510.6/502.5/261.7kh/s | A: 56 R:3+0(none) HW:0/none
 GSD 1:       | 510.6/500.3/283.9kh/s | A: 61 R:2+0(none) HW:0/none

I noticed that My Miners are accepting more when they are just starting. Could this be a signal telling us that I need to lower frequency? Or is this a Mining Pool issue?

Nope! You are not pushing them too hard! Your miners should be just fine. Mine are modded the same and have been working perfectly for weeks now, since I modded all of my miners myself using wolfey2014's 49.9k value findings and instructions.

I have more miners coming in next week from Hashra for $90 each including shipping. They will all receive the 49.9K mod as well!
Keep in mind. The mod voids the warranty, which is only 30 days long anyway. So no big deal, IMO.

How about the Mining Pool Hash rate? Although I am mingling at 1.04 the miner reports my HR/S around 450 to 550 Kh/s 

Is this an issue with my miners or a mining pool issue?

[gtraah]

Here is Mine, Is this good? Just the one resistor replaced with a 49. at 1200 Mhz.  Am I pushing too hard> will I damage my Gridseeds?


 2            |  1.04/ 1.02/ 0.54Mh/s | A:115 R:5+0(none) HW:0/none
--------------------------------------------------------------------
 GSD 0:       | 510.6/502.5/261.7kh/s | A: 56 R:3+0(none) HW:0/none
 GSD 1:       | 510.6/500.3/283.9kh/s | A: 61 R:2+0(none) HW:0/none

I noticed that My Miners are accepting more when they are just starting. Could this be a signal telling us that I need to lower frequency? Or is this a Mining Pool issue?

DOnt look at the pool, if you have been mining for awhile you will know dont even bother, pools are never accurate.

I only ever trust the miner, Cgminer is great for checking accepted, Rejected, WU shares, Hashrate.

Pool stats are exactly what you want to pay attention to. The stats you see are what are being used to determine how much money you make!
It's local stats that don't matter, there.
Local stats tell you what your miner's performance is and they too are inaccurate in that it's determined by the way the program is written and how it calculates hash rates in the first place.
I find cpuminer is the most stable and trouble free of them all even though it doesn't' show local hash rates. So what! That's not the stat that tells you what you're gonna get paid pool side anyway.

I am not talking in regards of getting paid here,Your going to get paid either way at the end of the day! Im talking about tweaking your miner and ACTUAL miner performance.. mann I am looking at the pool and sometimes it shows 2000KH more than my actual miners is showing you think I am going to believe that shit ?? LOL so no I wouldnt pay attention at the pool in regards of tuning your miners, Pool hasrate is all over the place and absolutely ridiculous to check your actual miner performance against.

I am not used to this, coming from GPU land lol Not once have I heard people checking the miner performance in a pool Yes obviously the pool is where you get paid but that does not mean that is what your miner is performing at.

[cmilian]

I just launched a pool at http://fastminer.org
Its hosted at Microsoft Azure.  Check it out. Need some hash. Starting with decent hash in the next 48 hours. Let me knowyour thoughts when you test it!

[gtraah]

GPU user. That explains a lot
I don't do GPU's. They are just too inefficient i.e. noisy, energy wasting space heaters! Although perhaps great for use in cold climates!  
I beg to differ on using pool side stats for tuning. I used pool side for just that purpose and it worked out great! I ran a single seed during testing phase and used pool side stats to see how it was doing. When it ran more efficiently, the pool stats were up. When it ran less efficiently, pool stats were down.
I do agree however that monitoring local hash rates has its merits too. I'd say neither client side or pool side can be used as conclusive evidence by themselves.
What can be used as conclusive evidence IS what one make$ at the end of the day. It's all the conclusive evidence I need, anyway!  

  Now I do GPU for N-Scrypt and the other asic proof allgos, I sold most of my GPU's though and have built myself a beast Quadfire 290x , 6 Core CPU to mine cpu coins also. What else you going to mine with scrypt before Asic came? BTC was a joke with its difficulty Anywayss With GPU "since that used to be the only thing to mine scrypt properly with" people tuned there cards using miners not pools, If someone came in amongst the crowd of miners and said My 290x is doing 1500KH man my tweaks are just fkn mad!!, people would laugh, just like a group of miners who know what gridseeds are capable off then someone comes in saying I tweaked mine to 600KH, This is my point...But yeh I see where you are coming from -- If your trying to measure your own tweaks then I guess you can use a pool, but its still unstable on short term tests, you really have to sit there wait until the average starts to show just to see how your tune went - With Cgminer in a matter of 15 seconds I can see Exactly to the 0.1 of a KH how different the tune is compare to prior...But I guess for people who use Cpuminer this is all they can do basically just see the pool KH difference prior the tweak and then after..

Anyways back to my question before, does anyone know where there is a good development going on for Cgminer I found some links to downloads but not sure If I am using the latest one or not.

[jamieb81]

I would love if someone makes a new CPUminer. I would even pay a bounty for it!

[gtraah]

I would love if someone makes a new CPUminer. I would even pay a bounty for it!

But isn't cgminer the simplest? All I did was Install Zadig and whilst one miner was plugged in, using Zadig I just pressed the button to replace the driver with the Winusb one... Only need to do it once and for one miner, now everytime i plug a miner in its detected properly. All I do now is run Cgminer Batch file. And Plug in the Hubs which have the miners already plugged onto them, thats it your now mining away