Overclocking the 8800 GTS

unfortunately you cannot D/L coolbits and use it, as it no longer works for the 8800's series drivers(i think), HOWEVER you can use Ntune snice you like me have an 8800GTS and 680I to OC the Video card, however i have tried to OC my card and find i VERY UNSTABLE OCed to anything even the tiniest amount can crash you comp.

Have you had any problems OCing your 8800GTX? because my GTS like i said eailer as soon as i OC by Ntune it becomes unstable.

I got a 450W Rosewill and i have an VGA cooler right under the 8800GTS so at load its usualy 62 degrees C. I was able to OC my 8800GTS to 700/900 but when i ran 3dmark 06 it crashed within the first test.

Well, right around 650 seems to be the upper limit for GPU overclocking, at least with the stock cooler. Try stepping it back to the settings I mentioned earlier and see if it's stable. You should definately invest in a better PSU, at least a 500W model, 450 is about the bare minimum to run a system such as yours at default speed.

Have not tryed coolbits on my GTS and nTune is verry pickey.
As soon as I try to OC it becomes unstable.

Using ATI tools now and it works great.

Currently testing @ 630/920.
Seems stable sofar, but I haven't gotten to deep into the tests yet.

If anyone knows how to keep the fan at 100% even after reboot I am shure it could be pushed it further.

Also, I have heard that bumping the voltage works wonders but have not found a way to do it yet.

But my ADD kicks in

To the OP, You don't have to do anything in the bios to OC your GTS.
It is all done with software in windows.
I would recomend ATI tools and a base setting of 580/850 to keep it on the safe side.
If everything tests fine, try upping it a little at a time.


Hey darkstar....
Just how easy is the voltage mod???

Very nice read!

1.26VGPU and 1.95VMEM stock under load.
Nice to know!
Wish they told what the voltage came out to after mod's, tho.

Mmmmm........
QC2 @ 4.5GHz............
842/1240...........

Wish I had time/$$/expertice to do that


I hear that it is also poss to OC the stream processor.
Stock @ 1350MHz I think?
Wonder what kind of increases are to be had when I find an app to do that!!

Heres an interesting article from the boys on the other side of the big pond that used Powerstrip to overclock the 8800 GTS.


http://www.custompc.co.uk./customp [...] 0-gts.html

Just like Ocing your 7900GT, when you OC an 8800GTS you see a 20% gain in performance, mount that up with that it already kills every DX9 card and you got yourself a 400$ killer

Guys are You using stock cooling for this overclocking? If yes, how about temperatures?

Thats weird. I've stopped on 602/950 and got 81-84C in "in-game-action". You did not modify fan settings, did you?

Well, You know, my last card was GF 6600GT + Pentagram Freezone 80 AlCu cooler and I always had much loooower temps, like 50-65C But, well, now I gained new experience! Lets run Gothic or Fear, play for few minutes and do some barbecue on this heat - that's a new motto
Too bad, nTune is not running properly so I stay with Ati Tool. Besides, my system is stable with these temps so I try o/c'ing tomorrow.

Thanks!

Well just to give you an example, i have an EVGA 8800 gts 640 running in an antec 900 case (all fans medium). I oced mine to 670/1020 its 100% stable and peaks at 72 C. I have a 600 W PSU. It required no voltage mod and i did notice something. I had mine oced to 670/1000 and i noticed it would flash to a black screen during canyon flight in 3dmark06. I raised it to 1020 on the mem and that eliminated that black flash, u dont always need to increase voltage to push it higher just try tweaking ur clocks. I used powerstrip to overclock. My stock system score was 9600, after i oced my Q6600 to 3.00 ghz, ddr2 800 at 1000 mhz 5-5-5-18 and my GTS to 670/1020 i achieved 12600. The GTS overclocks really well.