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Old 10-04-12, 09:40 PM   #1
vflorins
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Default GTX 660 not performing to full potential?

I was expecting my new GTX 660 to outperform the GTX 570, which it didn't - it was actually slower by almost 15% in the Unigine Heaven benchmark. I wonder if this has to do with the card not running at full speed in performance level 3 - the Nvidia control panel reports a 549 MHz graphic clock, which is way too low for this type of card. I am using driver version 304.37.
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Old 10-09-12, 07:11 AM   #2
artem
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Default Re: GTX 660 not performing to full potential?

Try 304.51 drivers.
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Old 10-14-12, 04:42 PM   #3
vflorins
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Default Re: GTX 660 not performing to full potential?

Upgrading to the latest driver did not help. I guess the GTX 660 just doesn't perform well. The GTX 570 is now only $20 more and a better buy it seems.
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Old 10-15-12, 05:59 AM   #4
artem
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Default Re: GTX 660 not performing to full potential?

Quote:
Originally Posted by vflorins View Post
Upgrading to the latest driver did not help. I guess the GTX 660 just doesn't perform well. The GTX 570 is now only $20 more and a better buy it seems.
And the latter consumes 219W vs the GTX 660 which consumes just 140W.
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Old 11-03-12, 12:44 AM   #5
darklegion
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Default Re: GTX 660 not performing to full potential?

Relatively old post, but I just want to note that the 549 GPU clock speed does suggest a problem (much lower than the 660's maximum clock speed), perhaps with powermizer. Older cards have an option to prefer the maximum performance level, not sure if the Kepler cards have this option.

Additionally, the performance of a 570 and 660 should be relatively similar, which isn't really that surprising. First number = generation, second number = performance level. Anyways, I bought a 660 myself so I guess I'll be posting back here if I have the same performance issues when it arrives.
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