UNDER-clocking 7900GTX

Sovereign · Post by **Sovereign** » Sat Jul 29, 2006 8:55 am

You heard me. For 2D mode, is it safe to underclock the memory? I tried using ATITool to cut memory from 1600MHz effective to 400MHz effective and the computer froze and displayed weird lines.

How LOW can I go to reduce heat production? I know the core throttles down in 2D...

Imakeholesinu · Post by **Imakeholesinu** » Sat Jul 29, 2006 11:28 am

I think running a processor or videocard at speeds lower than the standard speed won't work. Don't ask me why but I don't think you will be successful with this.

kenc51 · Post by **kenc51** » Sat Jul 29, 2006 12:02 pm

Should be fine........but don't use ATITool.....that's for ATI cards ;)

Try rivatuner.......ATI undervolts their cards in 2D too. I undervolt mine even more for lower temps. I don't think you can change the voltage on NV cards though.

sbohdan · Post by **sbohdan** » Sun Jul 30, 2006 7:31 am

kenc51 wrote:Should be fine........but don't use ATITool.....that's for ATI cards ;)

Try rivatuner.......ATI undervolts their cards in 2D too. I undervolt mine even more for lower temps. I don't think you can change the voltage on NV cards though.

for under or overclocking use NVtweak (it opens the hidden options in the control panel and doesn't have to run to work)

for changing the voltage on NV cards you need Nibitor and it involves saving your cards bios, changing the voltage in it and reflashing the card after.

to get NVtweak: http://nvtweak.laptopvideo2go.com/

to get nibitor: http://www.mvktech.net/component/option ... d1855629b/

cyberneticimplant · Post by **cyberneticimplant** » Tue Aug 22, 2006 11:32 pm

I would try rivatuner.

Sovereign · Post by **Sovereign** » Wed Aug 23, 2006 12:23 pm

I no longer need to do this as my college dorm has AC running 24/7 as my roommate and I agree that cold = good for both us and the computers.

Post by **Apoptosis** » Wed Aug 23, 2006 12:27 pm

how cold is cold? hehe

tomato · Post by **tomato** » Tue Sep 05, 2006 2:32 pm

Underclocking is fine, it should have no impact on the card. Overclocking, of course, is more risky as you are trying to run your card higher than factory specs... you void the warranty and risk frying your card and decreasing its lifecycle... do it as your own risk

stereo55 · Post by **stereo55** » Sun Oct 01, 2006 11:07 am

tomato wrote:Underclocking is fine, it should have no impact on the card. Overclocking, of course, is more risky as you are trying to run your card higher than factory specs... you void the warranty and risk frying your card and decreasing its lifecycle... do it as your own risk

One exception on the oc'ing and warranty = EVGA .

Evga will allow oc'ing and heatsink change without voiding the factory warranty .

Sovereign · Post by **Sovereign** » Sun Oct 01, 2006 1:45 pm

That's why I bought eVGA....lol YAY 512th post, postcount matches video memory (yes I'm that geeky that I keep track of things like that...) When I had 256 posts at a different forum when I noticed I said "Hey 256th post, I hope that's how much memory my next videocard will have." Ended up with a 128MB 6800NU, but now I have two 7900GTXs so I'm not complaining.