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Author Topic: 1 Card giving poor performance  (Read 544 times)
buzzby
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September 04, 2011, 02:46:27 PM
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Hi All,

I have 4 5850's and they were all running at around 400 mh/s. However 1 of my cards (device 1) has started producing poor results. It now only runs at 150 - 200 MH/s but will start at 400 MH/s for a few seconds. At least once a day this card will also fail with the hardware verficiation failed error and i then have to restart the minner.

I am using poclbm GPU miner with -v -w 128 settings.

As i said my other 3 cards are fine. Temps are the same for all cards.

I am using the very latest afterburner and running win7 64 bit.

I have reset the overclock back to factory setting and this has made no difference. all 4 cards were running at 900mhz with 600mhz memory.

Does anyone have any thoughts on what is going on as i am at a loss given that all the cards are the same and using the same software and drivers.
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Wildy
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September 04, 2011, 09:31:09 PM
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Possibly check the CPU affinity settings. If I have something CPU intensive on the same core as one of my GPU miners then it kills the performance.

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September 05, 2011, 05:38:33 AM
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How about replacing that card??

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September 05, 2011, 12:10:25 PM
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If you got an MSI board, try upgrading the BIOS. I had similar problem with 4x5870 and a 790FX-GD70 board.

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September 05, 2011, 05:44:34 PM
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If your other cards are seeing improvements at the fault of the 4th card, thats normal... but if no other cards are benefiting you might want to do something about it...

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September 05, 2011, 11:43:06 PM
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Hi All,

I have 4 5850's and they were all running at around 400 mh/s. However 1 of my cards (device 1) has started producing poor results. It now only runs at 150 - 200 MH/s but will start at 400 MH/s for a few seconds. At least once a day this card will also fail with the hardware verficiation failed error and i then have to restart the minner.

I am using poclbm GPU miner with -v -w 128 settings.

As i said my other 3 cards are fine. Temps are the same for all cards.

I am using the very latest afterburner and running win7 64 bit.

I have reset the overclock back to factory setting and this has made no difference. all 4 cards were running at 900mhz with 600mhz memory.

Does anyone have any thoughts on what is going on as i am at a loss given that all the cards are the same and using the same software and drivers.

There is a strong possibility it's overheating. What are the temps of all your cards?
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