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Author Topic: Is this a good mhash/s on ATi HD 5770?  (Read 12449 times)
Kiv
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April 09, 2011, 12:15:21 AM
 #21

Your speeds are low for a 5770. I have the same one and am using the same GUI as you (I wrote it, hehehe) and I get 164 MHash/s at stock clocks and 180 MHash/s when overclocked.

My guess is that you have some program running that is causing the GPU to downclock. For example, if I have Youtube open then my GPU clock goes down to 400 MHz and my hashrate plummets to 70 MHash.

If you have the Catalyst Control Center installed, you should give it a look at the GPU clock and see if it's 400 MHz, or if it's at the regular 850 MHz.

Hope this helps Smiley

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Clarithium
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April 09, 2011, 12:31:40 AM
 #22

Damn Kiv, you are the man.  If I jack it up to 950, It goes to 71 again. If I put it down at 400, its still at 71.  But 850 seems to be the sweet spot.

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