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GTX670 Voltage mod, 1.212v

illuz

illuz

illuz

Soldato
Joined
27 Apr 2012
Posts
4,068
Just flashed this to my GB WF 670 and can confirm that its running @ 1.212 volts, downloading Unigine now and going to see how far I can push this card now with these volts.

Google for the thread ("GTX 670 Unlocked Voltage Bios"), I don't know if I'm allowed to directly link...

WARNING - Be careful with flashing your card and overclocking it etc...

Have fun :D
 
Quick read of the forum and it seems like it disables boost/dynamic clocks and only increases the voltage by 0.02V. Default actually does 1.21V but the software fails to tell you that, needs to get the reading directly from a voltmeter.

Not bad for benchmarkers but not good for gamers.
 
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Yeah it does disable the boost clocks, I've managed to get mine to 1320MHz, max before was about 1280MHz. About the average increase people will see but I've broken 1300MHz :D

edit// Running very stable @ 1320MHz GPU (+118 offset of 1202 mod bios clock) + 3856MHz MEM (+850 standard mem clock) and temps aren't hotter, maybe by 1-2'C

The 1320MHz is the highest GPU will go, memory still has room to give... before the voltage mod I could only hit +740 stable!
 
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This is interesting, I've got a real gem of a 670 and have done multiple benches on both the 3dmark and heaven threads so I know my card pretty well.

Indeed it does do something weird to the boosts. It still seems to ramp up and down in increments according to afterburner and I can bench stable at a higher frequency, just ran a 1377mhz core run!

But... the scores are off, I can tell when the silicon of my chip is at its limits by sprites etc and at 1377mhz there very few and the 3dmark score confirmed it.

I would say the equivilent 1355mhz 3dmark run on the Gigabyte F4 BIOS is around 1380mhz with this BIOS to attain the same FPS/Score.

I havent had time to see if it will actually clock/bench higher with the 0.02v core boost you're supposed to get.

Will post back..

PS. Everything else seems fine with this if others want to give it a try, I did however have to down flash back to F1 before I could flash to this because it said I already had the F4 bios initially.
 
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I managed to overclock my memory by a full 1GHz with slight artifacts. Got it running at 900MHz stable benchmarks, 500MHz gaming. 1320 is my max on the core though.
 
With this bios Ive gained about another 40mhz on the core, upto 1282. Not sure its worth the extra voltage on mine. Will probably flash back to orig bios.
 
What kind of updates were you waiting on? I've not seen anything about this since word of the initial release.

Most people seem to have flashed back, me included. I went back as I found it difficult to manage the additional heat created, obviously you won't have that problem once under water ;)
 
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