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GTX 660 Ti downclocking

post #1 of 25
Thread Starter 
Hello everyone how is it going.
So I've been facing some problems in StarCraft 2 especially in replays, in which the FPS will go down as far as 20 FPS or lower ( even down to single digits ) and the GPU will downclock from the 1215 MHz to 1006 MHz, then to 810 MHz, and then lower than that.
Vsync is turned off.
Any thoughts? Help is deeply appreciated. Thanks.
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post #2 of 25

Temperatures? Anything above 70c will result in a downclock.

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post #3 of 25
Thread Starter 
Temperatures are in the 50's. Also the downclock for kepler only starts by a mere 13 MHz at 70C.
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post #4 of 25
Did you try going into NVIDIA Control Panel and setting the game to 'prefer maximum performance?'
post #5 of 25
Thread Starter 
Yes I did. Thanks for the tip tho.
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post #6 of 25
I can't see your rig on mobile but if your CPU isn't up to snuff and can't keep up the GPU won't work optimally and will down clock. SC2 is pretty CPU bound.
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post #7 of 25
Agreed on SC2 being very demanding on CPU. But I think even with his 3570k at stock it shouldn't be oscillating like that.

Have you read this yet?

http://www.overclock.net/t/1267918/guide-nvidia-inspector-gtx670-680-disable-boost-fixed-clock-speed-undervolting
post #8 of 25
Quote:
Originally Posted by ZeVo View Post

Agreed on SC2 being very demanding on CPU. But I think even with his 3570k at stock it shouldn't be oscillating like that.

Have you read this yet?

http://www.overclock.net/t/1267918/guide-nvidia-inspector-gtx670-680-disable-boost-fixed-clock-speed-undervolting

A 3570k definitely won't hold him back.

OP are you using evga precision? Try enabling K-boost.
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post #9 of 25
Thread Starter 
No I'm not, I'm using MSI Afterburner to monitor the clocks.
I'll check that guide and report back. Though I doubt it'd be of much help since a similar problem occured on my GTX 560 Ti.
"Setting a fixed overclock
First, find your maximum boost/memory offsets using the normal overclocking methods.
"
Sorry I don't quite understand that part. I didn't overclock my card I just let it boost on its own. Does that still mean I have to calculate something? Or I put it at 1215 MHz? ( the maximum clock my card boosts to )
Edited by Skorpian - 6/3/13 at 10:26pm
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post #10 of 25
Quote:
Originally Posted by Skorpian View Post

No I'm not, I'm using MSI Afterburner to monitor the clocks.
I'll check that guide and report back. Though I doubt it'd be of much help since a similar problem occured on my GTX 560 Ti.
"Setting a fixed overclock
First, find your maximum boost/memory offsets using the normal overclocking methods.
"
Sorry I don't quite understand that part. I didn't overclock my card I just let it boost on its own. Does that still mean I have to calculate something? Or I put it at 1215 MHz? ( the maximum clock my card boosts to )
I think you just put it at 1215MHz. I put mine at 1032MHz as that's my boost too.
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