Originally Posted by NCspecV81
I have some 1000uF ones I wanna try.
I question, to a degree how much they're needed now.
Ok, so after my bit of an experiment. I have found 2 things out.
1.) My chip is a voltage whore, why do I always get the chips that need a ton of voltage, be it a gpu or cpu.
2.) On my card, it appears as though there is a "hole" so to speak when setting the voltage from above 1.19v to 1.3v. In between here the vr's are unable to keep voltage a constant and even when gpu-z shows VDDC being in the target range in fact measuring from the gpu shows voltage at 1.03-1.18v through that range.
Now here's the kicker, as soon as voltage is set to 1.308v or above the voltage reads and holds at 80mV-100mV higher then what has been set. So when I set the voltage to 1.308v it was actually pumping 1.389v.
I was able to run Vantage at 930MHz core but it took 1.388v. I measured during each test(and yes, my legs and hands went numb).
My max temps on water running Vantage was only 54c at that voltage, holy crap, that is awesome. for every 100mv it seems to have raised my temps by 2c and for every 25MHz on the core another 1c raise. That was just with my quick experiment though, so I'm not saying over an extended period of time that's all I would see.
Now keep in mind, all the measuring I got for my volts was directly off of the gpu. Non of the voltages I referenced were from gpu-z's VDDC.
I don't know how overzealous I want to get now though as seeing how much vgpu it took me just to hit 930MHz for Vantage. I think I may just take my 915MHz core max for benching at 1.17 vgpu and let it be.
I'm too scared I might kill my card.
PS: The voltage "hole" I am referring to also, at some points would shoot the voltage up to 1.42v and above under load. Kinda scary if I do say so myself. Also, I ran Kombuster as just a quick stress test between switching voltages, Vantage was what I used as my Ultimate test so to speak. The second gpu test on Vantage(the space one) is a pretty harsh test imo and if it fails it always fails at that point.Edited by rx7racer - 7/9/10 at 4:17pm