Topic: Undervolting a GTX 1070 (Read 5297 times)

Maximum stability for my gtx 1070 evga it's 80% power limit and +450 memory clock, otherwise it might crash.

I have 5 GTX1070 and 2 GTX1060 on my RIG, all are at +100 on Core and +600 on mem with 73% of power limit
I'm mining dual ETH+PASL on ethermine and the reported hasharate is about 175 MHs but the average effective is 150 MHs
this differce depent on OC ? I didn't get any error on logs


+-----------------------------------------------------------------------------+
| NVIDIA-SMI 382.53                 Driver Version: 382.53                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name            TCC/WDDM | Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GTX 106... WDDM  | 0000:01:00.0     Off |                  N/A |
| 59%   66C    P2    83W /  84W |   2243MiB /  6144MiB |     99%      Default |
+-------------------------------+----------------------+----------------------+
|   1  GeForce GTX 106... WDDM  | 0000:02:00.0     Off |                  N/A |
| 64%   67C    P2    86W /  84W |   2243MiB /  6144MiB |     92%      Default |
+-------------------------------+----------------------+----------------------+
|   2  GeForce GTX 1070   WDDM  | 0000:03:00.0     Off |                  N/A |
| 83%   71C    P2    97W / 124W |   2280MiB /  8192MiB |     93%      Default |
+-------------------------------+----------------------+----------------------+
|   3  GeForce GTX 1070   WDDM  | 0000:05:00.0     Off |                  N/A |
| 48%   61C    P2   126W / 124W |   2280MiB /  8192MiB |     98%      Default |
+-------------------------------+----------------------+----------------------+
|   4  GeForce GTX 1070   WDDM  | 0000:07:00.0     Off |                  N/A |
| 79%   70C    P2   127W / 124W |   2280MiB /  8192MiB |     95%      Default |
+-------------------------------+----------------------+----------------------+
|   5  GeForce GTX 1070   WDDM  | 0000:08:00.0     Off |                  N/A |
| 49%   65C    P2   130W / 131W |   2280MiB /  8192MiB |     99%      Default |
+-------------------------------+----------------------+----------------------+
|   6  GeForce GTX 1070   WDDM  | 0000:09:00.0      On |                  N/A |
| 47%   60C    P2   120W / 131W |   2388MiB /  8192MiB |     95%      Default |
+-------------------------------+----------------------+----------------------+

i also overclocked my 1070 and reduced them again with the powerlimit at 65% ... now they do 440-450sol/s  with "much" less powerdraw if i overclock them and use 100% powerlimit they do 480-490sol/s .... not worth 35% more power imo and they run much cooler (48C vs 63C)

It's 1070* my bad.

Currently 7x with 3 psu's for safety, because power was instable.

I'm going to check it tonight when i get home 

how many 1080s with 850 PSU?

check with "nvidia-smi" your current power usage / tpd for your GPU

72/73º at the moment.

I have 850's cooler master psu's, maybe that's the problem. I will test it tonight and we'll update here.

Thanks

at what temperature is the card running? is PSU suitable to cover the required power easy?

try to run it at 70% - your MH/s or Sol/s rate shouldn't go down much but stability will be increased for sure

Mine gtx 1080 under 80% power limit on MSI afterburner, crashes after a while.

What's possibly going wrong?

Guys

thanks for the help. Does anyone know if its normal to have multiple cards running at different mv ? i have some at 1000 and some as low as 850mv...is it a power issue or lack of ?

Also does anyone know if its normal that the MH's fluctuate on claymore ? sometimes one particular card is high then on the next cycle it drops

Thanks in advance

I'd say 75% is the average however everything depends, if you are mining only eth (no dual) mining then reduce the clock, power and increase the memory to the max that will yield you the best result. I think is pretty safe to leave 24/7 1070 at 90 watts doing around 30.5 eth.

don't bother with lower setting with good profit like this one it sbetter to not limit to much your card or you lose money, i like to sit at 80% all the tiem on all algo, and never change anything bar only the mem for heavy algo coin like zec

What's the normal power percentage that people are setting to? I'm setting at 75 or so, but I haven't tried to go lower.

Maybe it depends the card you have, I can set 100 and lower. The good thing is that this command allows for unlinked settings which is a plus. I just did some testing with the 1070 i use for gaming. I can get eth 30.5 with 100 watts. I still need to test power at wall.

Guys, I use the Power Limit to reduce it, but I see no changes on my power meter, connected to the power socket.
Shouldn't it reduce it?

EDIT:
If I run this command in command-promt:

nvidia-smi -i 0 -pl 110

then i see changes to the power meter... but the command only allows me to change it to a maximum of 110 watts.

I have (11) 1070's and running about 115 watts at 30.7MH.  What is this "hardmod" i can do to lower?  95 is way better than 115!  I run my cards at 50% with afterburner, its as low as it goes.

just decrease the power limit will help you a lot.
For some extra savings (about 15 watt per card) you can do a hardmod:
I got my gtx 1070 running at 0,68v stock core clocks. (mining 30,4 Mh/s eth @ 95 watt power from the wall)

Use the power limit. nVidia cards react pretty well. You should be able to get to -60% power limit with the 1070s, maybe more.

Guys,

I have looked everywhere and cannot find a definite answer. Can a GTX 1070 be under volted  with MSI afterburner ? I have read multiple articles and watched youtube videos but cannot get a straight answer. I have a 8 GPU rig all with the same cards and i have noticed that all of them have different voltages. Is this normal ? Can i set them all at the same voltage ? Will a card with a lower voltage perform better ?

Sorry for all the questions. I have checked and all of them are pulling around 150w per gpu-z

Thanks in advance