Quote from: TenaciousJ on July 10, 2017, 06:00:51 AM

Quote from: fullzero on July 10, 2017, 12:45:44 AM

Quote from: TenaciousJ on July 10, 2017, 12:01:25 AM

Quote from: fullzero on July 09, 2017, 07:06:19 PM

Quote from: TenaciousJ on July 09, 2017, 06:53:55 PM

Quote from: fullzero on July 09, 2017, 05:12:49 AM

Quote from: TenaciousJ on July 09, 2017, 04:34:21 AM

Quote from: fullzero on July 09, 2017, 03:59:37 AM

Thanks for links.

You bet..

If you get a second, i posted a while back about an issue I'm having in 0017 where one card runs at 66% capacity while the others are at 100%. I'm just wondering if that's something you've seen before, and if there might be a straight forward solution to it. If not, I'll probably just wait until I swap boards in a few days to mess with it since otherwise it's running solid as a rock with all 6 gpus.

Is the hashrate lower with the GPU running at 66%?

Hey FZ - just wanted to let you know I resolved the issue with my underpowered GPU... turns out having 2 risers on one SATA power line is frowned upon... once I put all the GPUs on their own lines the system is back up at 100%

With 1080 or 1080ti that is best; especially if they are AM models. I haven't heard of anyone needing to do this with 1070s or 1060s; what type of GPUs are you using?

I've got:
2x asus dual 1070
3x EVGA superclock 1070
1x Nvidia 1070 FE in the x16 slot

Asrock z270 Killer SLI/AC mobo (no external power to mobo for pcie (no option for it))
dual 750w PSUs - 1x evga and 1x thermaltake
64gb USB 3 stick

No 1080s in this rig atm, though I had a 1080 ti in there yesterday in the x16 slot so no riser but the problems I've had arose with all 1070s

Before, I had it setup so that:
2 risers were powered on one molex power line
2 riser on 1 SATA lines
3x 1070 each on its own power line (450w); and
mobo/cpu all on the EVGA 750w psu; [all of that should be well within the acceptable range of draw from the PSU]

Then the other 3 1070 GPUs and 1 riser on molex were powered by the 750w thermaltake [again, well within the total power load taking overhead into account]

New setup splits the risers between the PSUs 2 go to separate lines on the EVGA, the other 3 on separate lines on the thermaltake, all on SATA power cables except 1 (though that shouldn't make a difference), and the risers are powered by the same PSU as the GPU main power is coming from whereas before they weren't.
the mobo/cpu are still on the primary EVGA PSU, and the thermaltake is connected by a Y splitter ATX cable.

The result is that the more even power load resolved the problem, though I can't be absolutely certain it was solved by splitting the risers to different lines exclusively.

Which driver version are you using?

Also do you know which GPU model was the one that was insufficiently powered?

I think driver 381.22 is installed right now. The cards that were underpowered were EVGA superclock 1070s, I had two of them on one SATA power cable and neither one worked properly that way. Once their risers were on their own lines they work great. Now I'm not seeing any dips in power - all cards are 100% and pulling about 3.25 sol / watt.

Maybe the new driver pulls more power from the PCIe slot; I will have to test for this on more rigs. If it is the case; it will likely cause many previously stable 1070 rigs using 1x sata per every 2 GPUs to become unstable.