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[GandalfG]

10x H boards heatsinked and running; getting 36 GH/s per board

Currently pulling about 420 w on a gold PSU

Pictures and thermals coming soon

Taco can you post log from  admin page  ? I'm curious how many chip fully work on new version H-board.
And pictures boards  with your heasink

[tacotime]

10x H boards heatsinked and running; getting 36 GH/s per board

Currently pulling about 420 w on a gold PSU

Pictures and thermals coming soon

Taco can you post log from  admin page  ? I'm curious how many chip fully work on new version H-board.
And pictures boards  with your heasink

100% of chips are returning some sort of valid nonce, impressively, and the startup dump says 100% good cores

One board is a little bunk and throws a massive amount of errors in comparison to the others and the chips are tuning down to about 25 GH/s after a little while.  Rest of the boards seem OK.

edit: Restarted and it seems OK

[GandalfG]

10x H boards heatsinked and running; getting 36 GH/s per board

Currently pulling about 420 w on a gold PSU

Pictures and thermals coming soon

Taco can you post log from  admin page  ? I'm curious how many chip fully work on new version H-board.
And pictures boards  with your heasink

100% of chips are returning some sort of valid nonce, impressively, and the startup dump says 100% good cores

One board is a little bunk and throws a massive amount of errors in comparison to the others and the chips are tuning down to about 25 GH/s after a little while.  Rest of the boards seem OK.

Good news, I ordered few board to and hope get similar result.
There is still lower performance in last slot (A4, B4) on each  bank ? I tested many config, and all board have ~20% lower scores in last slot.
Unless overclocking do not see this too much. But with the increase voltage and Gh per board, the difference grows significantly.

Code:

0:	879	40.573	43.558	2834	203	1	0
1:	877	39.786	41.010	2779	75	0	0
2:	872	42.191	43.970	2947	151	0	0
3:	714	33.859	35.281	2365	158	0	0

[tacotime]

The slots are no longer labeled "A1 A2" etc, rather now they are just 0 1 2 3 .. E F

My bad performing card is in slot 7 and I haven't tried to the other slots out yet

edit: Slot 7 card just died, I will move it to a new slot and see if it hashes any better there

2nd edit: Okay, there ARE banks, they just arent labeled on the PCB.  Messing around with trying them in different banks now

[tom99]

The slots are no longer labeled "A1 A2" etc, rather now they are just 0 1 2 3 .. E F

My bad performing card is in slot 7 and I haven't tried to the other slots out yet

edit: Slot 7 card just died, I will move it to a new slot and see if it hashes any better there

2nd edit: Okay, there ARE banks, they just arent labeled on the PCB.  Messing around with trying them in different banks now

  Did you use fan on Hboards?

[tacotime]

The slots are no longer labeled "A1 A2" etc, rather now they are just 0 1 2 3 .. E F

My bad performing card is in slot 7 and I haven't tried to the other slots out yet

edit: Slot 7 card just died, I will move it to a new slot and see if it hashes any better there

2nd edit: Okay, there ARE banks, they just arent labeled on the PCB.  Messing around with trying them in different banks now

  Did you use fan on Hboards?

3x CM R4 @ 2k RPM, 120mm

Hboards are also heatsinked

[tacotime]

Code:

bad      off     per chip        good cores
0:      848     35.892  37.522  2507    76      4       0       0       16     00       (2.243/chip)    34%
1:      848     36.307  37.491  2536    15      0       0       0       16     00       (2.269/chip)    35%
2:      848     27.431  27.946  1916    134     16      5       2       16     00       (1.714/chip)    30%
4:      848     35.720  36.708  2495    68      2       0       0       16     00       (2.232/chip)    34%
5:      848     37.180  37.152  2597    14      1       0       0       16     00       (2.324/chip)    35%
6:      848     38.898  38.917  2717    8       2       0       0       16     00       (2.431/chip)    36%
8:      848     33.000  34.309  2305    82      4       0       0       16     00       (2.062/chip)    32%
9:      848     33.529  36.698  2342    82      1       0       0       16     00       (2.096/chip)    32%
A:      848     0.000   0.000   0       0       0       0       0       16     00       (0.000/chip)    9%      speed down
C:      848     35.648  36.793  2490    16      1       0       0       16     00       (2.228/chip)    34%

So, yeah, I have 1 bad H-board it appears.  It throttles down for about 15 minutes and then just goes to 0 GH/s

Uh, are these still covered under warranty if I heatsinked the back, Dave?

Edit: This is interesting, a second board just did the same thing. :|

[tacotime]

Okay, this is interesting.  There are two problem boards, and they keep shutting off as if they're thermocycling or something (go up to 36 GH/s, slowly go to zero, then suddenly go back to full speed).  The chips on these boards are fine by temperatures, all less than 60 C.

[GandalfG]

Okay, this is interesting.  There are two problem boards, and they keep shutting off as if they're thermocycling or something (go up to 36 GH/s, slowly go to zero, then suddenly go back to full speed).  The chips on these boards are fine by temperatures, all less than 60 C.

In the first slots try to keep the best cards. These problems in the past.
Move from slot A to last - C ?

[tom99]

Code:

bad      off     per chip        good cores
0:      848     35.892  37.522  2507    76      4       0       0       16     00       (2.243/chip)    34%
1:      848     36.307  37.491  2536    15      0       0       0       16     00       (2.269/chip)    35%
2:      848     27.431  27.946  1916    134     16      5       2       16     00       (1.714/chip)    30%
4:      848     35.720  36.708  2495    68      2       0       0       16     00       (2.232/chip)    34%
5:      848     37.180  37.152  2597    14      1       0       0       16     00       (2.324/chip)    35%
6:      848     38.898  38.917  2717    8       2       0       0       16     00       (2.431/chip)    36%
8:      848     33.000  34.309  2305    82      4       0       0       16     00       (2.062/chip)    32%
9:      848     33.529  36.698  2342    82      1       0       0       16     00       (2.096/chip)    32%
A:      848     0.000   0.000   0       0       0       0       0       16     00       (0.000/chip)    9%      speed down
C:      848     35.648  36.793  2490    16      1       0       0       16     00       (2.228/chip)    34%

So, yeah, I have 1 bad H-board it appears.  It throttles down for about 15 minutes and then just goes to 0 GH/s

Uh, are these still covered under warranty if I heatsinked the back, Dave?

Edit: This is interesting, a second board just did the same thing. :|

   Your Hboard maybe overheat that why Hboard shutdown and you need better cooling. 

[klondike_bar]

Code:

bad      off     per chip        good cores
0:      848     35.892  37.522  2507    76      4       0       0       16     00       (2.243/chip)    34%
1:      848     36.307  37.491  2536    15      0       0       0       16     00       (2.269/chip)    35%
2:      848     27.431  27.946  1916    134     16      5       2       16     00       (1.714/chip)    30%
4:      848     35.720  36.708  2495    68      2       0       0       16     00       (2.232/chip)    34%
5:      848     37.180  37.152  2597    14      1       0       0       16     00       (2.324/chip)    35%
6:      848     38.898  38.917  2717    8       2       0       0       16     00       (2.431/chip)    36%
8:      848     33.000  34.309  2305    82      4       0       0       16     00       (2.062/chip)    32%
9:      848     33.529  36.698  2342    82      1       0       0       16     00       (2.096/chip)    32%
A:      848     0.000   0.000   0       0       0       0       0       16     00       (0.000/chip)    9%      speed down
C:      848     35.648  36.793  2490    16      1       0       0       16     00       (2.228/chip)    34%

So, yeah, I have 1 bad H-board it appears.  It throttles down for about 15 minutes and then just goes to 0 GH/s

Uh, are these still covered under warranty if I heatsinked the back, Dave?

Edit: This is interesting, a second board just did the same thing. :|

   Your Hboard maybe overheat that why Hboard shutdown and you need better cooling. 

this. When i pencil mod my 2-card rig, the maximum i can run stable is about 38.5-39GH per card. If i run higher than that, they become sensitive to the changes in ambient temperature (my apartment always gets hot in the evening) and would do what youve seen, where chips drop to zero and either restart again a few minutes later or require me to stop/start miner.

you either need better cooling to the card, or slightly tune back its performance. whats with your card 2 btw? 27Gh and lots of errors - is that also cycling between 36->27->36? if so it needs better cooling also and it will be stable

[tacotime]

Code:

bad      off     per chip        good cores
0:      848     35.892  37.522  2507    76      4       0       0       16     00       (2.243/chip)    34%
1:      848     36.307  37.491  2536    15      0       0       0       16     00       (2.269/chip)    35%
2:      848     27.431  27.946  1916    134     16      5       2       16     00       (1.714/chip)    30%
4:      848     35.720  36.708  2495    68      2       0       0       16     00       (2.232/chip)    34%
5:      848     37.180  37.152  2597    14      1       0       0       16     00       (2.324/chip)    35%
6:      848     38.898  38.917  2717    8       2       0       0       16     00       (2.431/chip)    36%
8:      848     33.000  34.309  2305    82      4       0       0       16     00       (2.062/chip)    32%
9:      848     33.529  36.698  2342    82      1       0       0       16     00       (2.096/chip)    32%
A:      848     0.000   0.000   0       0       0       0       0       16     00       (0.000/chip)    9%      speed down
C:      848     35.648  36.793  2490    16      1       0       0       16     00       (2.228/chip)    34%

So, yeah, I have 1 bad H-board it appears.  It throttles down for about 15 minutes and then just goes to 0 GH/s

Uh, are these still covered under warranty if I heatsinked the back, Dave?

Edit: This is interesting, a second board just did the same thing. :|

   Your Hboard maybe overheat that why Hboard shutdown and you need better cooling.  

Thermal diode reports chips are 51 C VRM is 54 C :|

I swapped the cards into different slots and now they're both no longer throwing lots of errors or shutting down

Clearly H-boards are delicate flowers

Most recent stats:

Code:

board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good   bad      off     per chip        good cores
0:      848     36.851  37.195  2574    75      0       1       0       16     00       (2.303/chip)    19%
1:      848     35.419  37.290  2474    9       1       0       0       16     00       (2.214/chip)    18%
2:      848     37.452  38.685  2616    18      1       0       0       16     00       (2.341/chip)    19%
4:      848     35.262  36.434  2463    60      2       0       0       16     00       (2.204/chip)    18%
5:      848     36.035  36.846  2517    18      1       0       0       16     00       (2.252/chip)    19%
6:      848     37.982  38.600  2653    8       0       0       0       16     00       (2.374/chip)    20%
8:      848     31.668  34.045  2212    77      1       0       0       16     00       (1.979/chip)    17%
9:      848     34.847  36.550  2434    69      0       0       0       16     00       (2.178/chip)    18%
C:      848     35.777  36.518  2499    30      2       0       0       16     00       (2.236/chip)    19%
D:      848     32.885  31.941  2297    13      1       2       0       16     00       (2.055/chip)    17%

[tacotime]

Yeah so that one board is still bad.  Keeps shutting itself off even if I downclock it so the onboard temps are only 30-40C.  I guess I'll have to talk to dave about RMAing it.  This happens no matter what slot it's in.

[klondike_bar]

Yeah so that one board is still bad.  Keeps shutting itself off even if I downclock it so the onboard temps are only 30-40C.  I guess I'll have to talk to dave about RMAing it.  This happens no matter what slot it's in.

if you are mixing capacitor and no-capacitor boards, try putting ones with caps behind those without. In theory, this may have a stabilizing effect on the bank depending just how the m-board circuit is laid out. Of course a bad board is a possibility too, but they are very simply designed so there are not many failure modes available (bad chip, broken component, bad solder, etc)

make sure heatsinks are on the backside of the PCB, and put a heatsink on the thermal vias opposite the small volatge regulator. putting a heatsink on the inductor may help as well, as these components are both near thier capable limits at 30A across cards doing >35GH. keeping thier temp down may help

[Keefe]

I just powered up my new full rig, v3.0 M-board, 16 v2.2 H-boards. No heatsinks, 3 fans side by side (120mm, 148 cfm each). Getting 575 GH/s without tweaking. Using 622W at the wall, plus 30W for the fans (PSU is 86% efficient). Very nice!

The v3.0 M-board has two 6-pin PCIe power sockets and also the screw terminals like the v1.0 M-boards. Using an extra adapter from an older kit, I'm able to plug 4 cables from my PSU into the M-board. This should solve my concerns about pulling alot of current through just two cables.

[achimsmile]

Yeah so that one board is still bad.  Keeps shutting itself off even if I downclock it so the onboard temps are only 30-40C.  I guess I'll have to talk to dave about RMAing it.  This happens no matter what slot it's in.

Same thing happened to me, chips were cool enough. Turned out that the power regulator was too hot, despite heatsinks (I measured 90°C with IR-Thermometer). I moved the 3 fans from the top to the side of the regulator, which helped a lot. Now my 10 Boards are stable at 345-355 GH/s.

[Soros Shorts]

Yeah so that one board is still bad.  Keeps shutting itself off even if I downclock it so the onboard temps are only 30-40C.  I guess I'll have to talk to dave about RMAing it.  This happens no matter what slot it's in.

Same thing happened to me, chips were cool enough. Turned out that the power regulator was too hot, despite heatsinks (I measured 90°C with IR-Thermometer). I moved the 3 fans from the top to the side of the regulator, which helped a lot. Now my 10 Boards are stable at 345-355 GH/s.

Aren't these new H-cards supposed to have trim pots that would allow you to reduce the voltage output of the regulator? The voltage preset at the factory may just be a little too high for your operating environment. This symptom was common with the August H-cards if you "over pencil mod" them. I have yet to receive my Oct kits, but if this were to happen to mine I would try reducing the voltage a little on those cards that were shutting down.

[Doff]

I bought a Multimeter to be able to check the voltage, however I do not know where on the board you would test that.  If someone could make a screenshot of that I would really appreciate it, or maybe it already exists?

I have tried all sorts of fans and none seem to keep the regulator cool enough to keep them from cycling. Mine just turn off as well, and do not come back up.

[goxed]

If you donot add heatsinks to the regulator area, cards will cycle. The real point of adding heatsinks to the ASIC is to keep the regulator cool. Add sinks to the regulator and atleast the bottom 2 rows of ASICS and reduce STRESS in your life .
BTW, I also did another mod, but I will not advise anyone to do that unless they know what they are doing. It's obvious if you look at my H-card very carefully.

[goxed]

I bought a Multimeter to be able to check the voltage, however I do not know where on the board you would test that.  If someone could make a screenshot of that I would really appreciate it, or maybe it already exists?

I have tried all sorts of fans and none seem to keep the regulator cool enough to keep them from cycling. Mine just turn off as well, and do not come back up.

Check voltage on top of the inductor (grey box with PULSE printed on it and any of the GND pin from the PCIE power supply)