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2 card not a 100%
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Topic: 2 card not a 100% (Read 1187 times)
Apolo29
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2 card not a 100%
May 22, 2011, 01:31:41 PM
#1
I have 2 6850 card running in my pc.
The first ( device 0 ) is working between 98 and 100%, the second one is working between 90 and 95 of gpu usage, can i make it work at 100%.
The problem happens with phoenix and guiminer ( both with the same setting )
Basiley
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Re: 2 card not a 100%
May 22, 2011, 01:48:17 PM
#2
IMO, no.
there is no way to FULLY[100%] saturate GPU.
Apolo29
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Re: 2 card not a 100%
May 22, 2011, 01:51:50 PM
#3
Quote from: Basiley on May 22, 2011, 01:48:17 PM
IMO, no.
there is no way to FULLY[100%] saturate GPU.
I understand, but why don´t they give me the same hashrate at least? one is over 220 and the other over 210
Basiley
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Re: 2 card not a 100%
May 22, 2011, 01:54:34 PM
#4
Quote from: Apolo29 on May 22, 2011, 01:51:50 PM
Quote from: Basiley on May 22, 2011, 01:48:17 PM
IMO, no.
there is no way to FULLY[100%] saturate GPU.
I understand, but why don´t they give me the same hashrate at least? one is over 220 and the other over 210
maybe different firmware ? [with different throttling and ram timing settings. for example]
maybe some was colder/warmer, maybe some pools[if you mine in pool]distribute load not so .. good.
Hawkix
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Re: 2 card not a 100%
May 22, 2011, 09:24:50 PM
#5
I have two 5870's and experience the same. The second card is somewhat slower than the first one. Its hashrate is not stable, sometimes it gots lower, while the first card (MASTER) runs at 99% all the time with stable maximal hashrate.
I think it has started since I tried to test CrossFire. Even when removed, still there is the influence.
Another cause may be that the slower card is in the PCIe 4x slot, while the master uses 16x.
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jasonk
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Re: 2 card not a 100%
May 22, 2011, 09:40:48 PM
#6
Are you using an Agression level of 11 or 12?
Secondly try to reduce as much graphical rendering on the desktop as possible (e.g. turn off Aero if your using Win7 or Vista, turn off widgets etc.)
My cards run at 99% at agression 11 or 97% at agression 7. I have 2x 5830's and 2x 5850's in another PC under Win7.
Apolo29
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Re: 2 card not a 100%
May 23, 2011, 02:30:05 AM
#7
Quote from: jasonk on May 22, 2011, 09:40:48 PM
Are you using an Agression level of 11 or 12?
Secondly try to reduce as much graphical rendering on the desktop as possible (e.g. turn off Aero if your using Win7 or Vista, turn off widgets etc.)
My cards run at 99% at agression 11 or 97% at agression 7. I have 2x 5830's and 2x 5850's in another PC under Win7.
I´m using agression 11, the problem is with second card wich doesn´t have graphical rendering ( there is not even a monitor plugged )
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