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-   -   GTX 280 GPU2 not underclocking (http://www.hardwarecanucks.com/forum/video-cards/36913-gtx-280-gpu2-not-underclocking.html)

Cobrajr122 October 7, 2010 09:12 PM

GTX 280 GPU2 not underclocking
Title says most of it.

I have 2 EVGA GTX 280 ssc's. When they are idle, one under clocks itself, and one does not. I would like it to also under clock to lower temps and power usage.


I have done some googleing and not much comes up, mostly people trying to stop it from downclocking. So no luck there :(

Anyone have any ideas?


_dangtx_ October 7, 2010 09:15 PM

does this happen with sli enabled, or both?

Cobrajr122 October 7, 2010 09:17 PM

This is currently happening with SLI enabled, Ill disable it and edit this post with and answer for you.


With SLI OFF - GPU2 drops down to the normal idle under clock, and GPU 1 now sits just above the idle under clock.

So is there a way to fix this while keeping SLI on?

rjbarker October 7, 2010 09:42 PM

Been down this road a few times....its always Driver related....try a previous Driver that they downclocked properly with......which Driver are you presently using?

Cobrajr122 October 7, 2010 09:53 PM

I am currently using the newest beta drivers.

_dangtx_ October 7, 2010 10:09 PM

beta :)

go back to the nearest whql.

rjbarker October 7, 2010 10:43 PM

258.96 or as I said, the last version which the Cards downclocked properly on...during the 19x.xx Driver release, I stuck to my 18x.xx Drivers as none of those newer Drivers would downclock my 280's properly......btw, my 480's are downclocking fine on the 260.xx Beta's....

Cobrajr122 October 9, 2010 09:42 PM

I have dropped back down to 258.96 and the problem still persists in SLI mode. :(

I guess Ill just have to live with it.

rjbarker October 9, 2010 09:51 PM

^^^^ 1 Driver change may not solve it.....don't give up...try a few of the previous Drivers until you find one that it functions correctly......was 258.96 working (downclocking) your Cards properly? Are you doing a "clean install"..?....as in Driver Sweeper, CCleaner etc etc....also uninstall and re-install Precison (if your using it)..as in clean install Precision after clean install of Drivers. Trust me....I have been down this road...

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