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Furmark downclocks GPU?

post #1 of 12
Thread Starter 
why doesnt it run at 950 mhz? (3dmark11/vantage run at 950 mhz without a problem)
http://i.imgur.com/CTguf.jpg
Edited by brolly - 6/12/11 at 9:19am
    
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post #2 of 12
is it shown as 648mhz as well in other utilities such as afterburner?
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by lotdash0t View Post
is it shown as 648mhz as well in other utilities such as afterburner?
yes it is, had afterburner running while testing and it jumps around in 600 mhz range

Other benchmarking softwares show up as 950 mhz in afterburner and gpuz
    
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post #4 of 12
what option are you using in the burn-in-test? just tried it, and I got no problem like yours. what driver are you using?
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post #5 of 12
Thread Starter 
atiumdag 8.850.0.0 Catalyst 11.5


1920x1080
Dynamic Camera
Burn-in
Xtreme burn in
(and 1 try with post fx)
windowed
    
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post #6 of 12
Thread Starter 
when I just use CCCs Amd overdrive to 840/1375 +20% it uses 840 mhz this is so weird, is something wrong with my msi afterburner oc?
    
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post #7 of 12
Maybe a Power Draw Limiter on the card is kicking in in Furmark and causing to downclock your GPU..


CHEERS..
     
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post #8 of 12
Set power control setting in CCC to 20%...It wont work if your using AB though as AB overrides CCC values. Use Trixx instead as it allows you to use both at same time
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post #9 of 12
The power limiter kicks in, in Furmark, OCCT and similar stress testing apps, afaik. That is why.

These aren't the best ways to test heat anymore, you should run Crysis/Warhead or 3DMark (Vantage/11) instead.
    
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by Darylrese View Post
Set power control setting in CCC to 20%...It wont work if your using AB though as AB overrides CCC values. Use Trixx instead as it allows you to use both at same time
thanks, trixx works like a charm (why does everybody recommend afterburner???)

So I can still have my CCC alive as long as I dont open the Overdrive Tab (else it gets cloekd down to 840/1375)
    
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