I'm curious if other people are doing this or were exactly i can send an email to site authors to maybe have a write up on this. I'm well aware of undervolting and overclocking on the CPU side of things and it was only recently that sites started looking at undervolting performance as well as overclocking performance (Albert not as often but they do look at it)
What I’m curious about is this aspect on the GPU side of life. Now MSI afterburner can do voltage adjustments on cards it makes this a lot easier to look at. I have been doing some tests and run throughs on my Sapphire 7970 (got it launch day in Australia) so it is one of the first runs of GPUs to be sold.
I was curious since it overclocks like a bat out of hell what it did in the opposite direction and at the moment I’m running at 1.031V instead of the default 1.171V with an overclock to 1 GHz on the core. I’m well aware that the core clock can go higher but I reduced voltage 13.5% and increased clock rate by 8%. I see no point in raising the clock rate higher than that as it still can’t max games out with AA enabled so there is no point.
Update: With stock clock/memory speed i have got the Vcore down to .993 @ 930Mhz. I have reduced the Vmem to 1.5 @ 1375Mhz and i have run Furmark for 15min to burn in. Going to test with 3dmarks and Heaven soon to see if a different load can make it unstable. That makes a 18% reduction for Vcore and and a 6.5% reduction for memory. With my watercooling it maxes at 37c which is nice.
I have a GTX 570 in my editing machine and I’m going to try the same thing on that shortly.
Has anyone else done this with any 28/40nm GPUs or am I still in the minority of the minority that buy high end cards?
What I’m curious about is this aspect on the GPU side of life. Now MSI afterburner can do voltage adjustments on cards it makes this a lot easier to look at. I have been doing some tests and run throughs on my Sapphire 7970 (got it launch day in Australia) so it is one of the first runs of GPUs to be sold.
I was curious since it overclocks like a bat out of hell what it did in the opposite direction and at the moment I’m running at 1.031V instead of the default 1.171V with an overclock to 1 GHz on the core. I’m well aware that the core clock can go higher but I reduced voltage 13.5% and increased clock rate by 8%. I see no point in raising the clock rate higher than that as it still can’t max games out with AA enabled so there is no point.
Update: With stock clock/memory speed i have got the Vcore down to .993 @ 930Mhz. I have reduced the Vmem to 1.5 @ 1375Mhz and i have run Furmark for 15min to burn in. Going to test with 3dmarks and Heaven soon to see if a different load can make it unstable. That makes a 18% reduction for Vcore and and a 6.5% reduction for memory. With my watercooling it maxes at 37c which is nice.
I have a GTX 570 in my editing machine and I’m going to try the same thing on that shortly.
Has anyone else done this with any 28/40nm GPUs or am I still in the minority of the minority that buy high end cards?
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