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GTX 470 Downclocking

post #1 of 9
Thread Starter 
I recently bought a GTX 470 a few weeks ago and have been having some issues with it downclocking to 2D clocks and just sticking there until I restart the computer. At first I thought it was because I had overclocked it too far, so I stepped that back further and further still having the same issue until now I'm at stock clocks and I'm still having the same issue.

This won't happen immediately, but a little while after running an intensive program like a game or stress test. There will be a blip in GPU usage from >90% to 0%, then back to >90% and it will downclock to 405 MHz. Temperatures seem fine, never going over 85C and this happens even under 80C while at stock clocks.

I'm using the latest (266.58) drivers on Windows 7 64-bit. I've tried reinstalling the drivers a couple times (Using driver sweeper + rebooting into safe mode and running again) but haven't really made any progress. In the nVidia settings I have the application set to prefer maximum performance.

Is this an issue with the card itself and do I need to RMA it, or is it something else?

Edit: Also I'm not getting any artifacts or having anything appear out of the ordinary, it just happens randomly. It can sit at the same temperature for 15 minutes and then it will happen.
Edited by Fenam - 2/16/11 at 10:43pm
post #2 of 9
cards do this when it doesnt need to use 100% of the card.

my card does it to. faily sure they all do. when u use it itll go back upto normal clocks (:
    
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post #3 of 9
Thread Starter 
That's the problem. It doesn't. This is also happening while it's under load.
post #4 of 9
what are you useing to test that it isnt doing it?
    
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post #5 of 9
Thread Starter 
It downclocks normally when I'm not doing anything, that's not the issue. While using OC Scanner it will happen, or while playing SC2 or Mafia 2 (although it takes longer and doesn't always happen.)
post #6 of 9
mmm mine sometimes does it as well..
gets annoying.. not sure.

mine doesnt really do it anymore.. are those the latest drivers?
    
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post #7 of 9
2D clocks on a 470 is ~50mhz core, not 405mhz. 405mhz is a safety feature- temps, clocks, or voltage is the issue.
 
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post #8 of 9
1. try press the reset button in arfterburner or what ever u overclocked with.

theonedub ? my 460 downclocks to 405mhz when idle? then itll go upto max.. if not needed.
eg wow or cod4. itll goto 675.. anyways back on topic.
    
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post #9 of 9
Quote:
Originally Posted by Liighthead View Post
1. try press the reset button in arfterburner or what ever u overclocked with.

theonedub ? my 460 downclocks to 405mhz when idle? then itll go upto max.. if not needed.
eg wow or cod4. itll goto 675.. anyways back on topic.
I paused my Folding client to grab this for you:



Load is 775, first drop off is to 405, then the final idle clock is 51mhz.

If the card locks to 405mhz and will not come out unless you reboot its not idle clocks, its a sign of instability.
 
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