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Undervolting GPU should be standard procedure
- Thread starter ne0
- Start date
Soldato
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- 24 Jun 2021
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wondering if I can/should undervolt my 1080 strix
and if so, is it just a case of getting afterburner and dragging a power slider, or is there more to it?
and if so, is it just a case of getting afterburner and dragging a power slider, or is there more to it?
The AMD software is best for AMD cards.
You should be able to reduce power draw quite a bit with tuning the 6600xt, https://youtu.be/Ln6DVaQ6XTE?t=511
He explains his settings a bit earlier than this time in the video
This will show you how to do it (skip to 8:37):
The guide is for the 2000 series, but the 1000 and 3000 series cards work the same way.
Just reduce voltage in small steps until you start seeing graphical glitches or instability.
My concern with under-volting would be that dies are being binned, so the difference between the worst and best samples is probably not that big, NVidia will have analysed the voltage requirements and stability with a given voltage in detail and probably added a bit extra for tolerance.
If you under-volt too far then eventually you're likely to come up against a demanding game where rendering errors occur, or the errors might not even be visible if it's in something like physics calculations so you just get odd glitches that you dismiss as game bugs. Also, games today are probably not as demanding as games will be in 2-3 years time so while it might be stable today that might not always be the case as the GPU gets pushed harder. NVidia will have done a thorough torture test on each die to ensure that they are good for the type of heavy work loads we're likely to see 5 years from now.
This will give you an idea what to play around, depending on the application my card at stock could drop in the 1700mhz range with an undervolt locked at 1905 which for me seems the sweet spot now it sustains the clocks at 1905 and jumps to 1920mhz with lower temps and power use while increasing performance over stock you will have to find whats stable so does need patience
I'm using Afterburner which can have up to 5 profiles I think - they're applied manually, not per-game though (at least, I don't think so - haven't delved too deep 'cause I mostly just use the one undervolt/overclock now).
@lnoton I'd be interested in finding out how you get on with this. I tried it and my 3080 crashed during Heaven 4 benchmark so I had to sack it off.
what clock and mv did it crash on ? I currently have it on 1905 @893mv every card is different just gives an idea what to play around with you might need more or less mv . been using it for few weeks now on this
1900 at 887mV using Afterburner.
There was no artifacting, just some coil whine and then an abrupt stop during the benchmark. It's put me off really. If it crashes in Heaven 4, will it not be more prone to it in something like Neon Noir? I could faff on for ages and succeed in making it work for Heaven but then crash during something more demanding.
I like the idea, I just haven't had fun so far.
How do you set it to 1900 when I click confirm it jumps to 1905 . for me 887mV at 1905 crashed but took good amount of testing before it did so far 893mV has been fine but need to see over time if not will just go up next step mV
So far as I know you can't - Ampere seems to scale in 15Mhz increments - so 1890, 1905, 1920 etc.
Maybe it did jump to 1905mhz.
Unfortunately I might have given you the impression I knew what I was doing
I have no clue about all this really I'm just following what I read in this thread as the "sweet spot"
Maybe it did jump to 1905mhz.
Unfortunately I might have given you the impression I knew what I was doing
I have no clue about all this really I'm just following what I read in this thread as the "sweet spot"
try the next step up from 887mV which is 893mV if its not stable keep working up step by step
was confusing me also If I restart and select the saved profile it can be set to 1920 even if i saved the profile at 1905 doesnt seem to effect stability
Don't just copy other people's settings, as every card will be a little different due to silicon lottery factors. Nvidia cards operate in frequency steps of 15MHz, and even one of those can be the difference in stability. My 3070 Ti was slightly unstable at the 1905MHz mark at 887mV, but rock solid at the next step down of 1890MHz. Your best bet is to start lower at, say, 1850MHz and work your way up. You don't even have to do it all at once. Set it to 1850MHz, game for a few days and if you don't get any crashes, go back in and bump it to 1865MHz and repeat. You already know 1905MHz isn't stable, so it shouldn't be a long process. Alternatively, you can go a bit higher on the voltage. Something ~950mV will get you well north of 1900MHz and closer to 2000MHz, at the cost of power draw of course.Maybe it did jump to 1905mhz.
Unfortunately I might have given you the impression I knew what I was doing
I have no clue about all this really I'm just following what I read in this thread as the "sweet spot"