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Author Topic: Gui Miner issues with 3 GPU's  (Read 767 times)
kristoff
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June 20, 2011, 01:42:14 AM
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Hello all, im fairly new to bitcoin mining. But i have stumbled upon an issue i think is worth posting about, because i have no idea what would cause it.

As you can see from the picture below, all 3 of my 5830's have been mining for about 20min, but for some reason gpu 2 isnt quite up to speed with 1 & 3. Is this a problem anyone else is having or is it some kind of settings issue?


settings are as follows

aggression = 7
phatk kernel
worksize 256



http://i5.photobucket.com/albums/y189/azngifts/guiminererror.jpg
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pokermon919
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June 20, 2011, 01:48:15 AM
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You sure the OS see all 3 cards and the 2nd miner isn't on cpu?
kristoff
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June 20, 2011, 01:55:01 AM
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yes guiminer sees 3 GPUs, catalyst control center sees 1 primary GPU and 2 additional GPU are active, CPU mining is not selected. It just slowly over time falls behind the other 2 GPUs  Huh
Ilikeham
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June 20, 2011, 02:04:13 AM
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Depending on the physical layout of the cards in the rig, the middle card might have restricted airflow and be thermally throttling itself. I don't mine, but I competitively overclock and that issue in not uncommon with air cooled multi card layouts. Put a house fan pointed directly into the open side of case and see if the problem is resolved, if so, you know what it is.
pokermon919
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June 20, 2011, 05:21:15 AM
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If the temps are high on the 2nd gpu then what Ilikeham said would likely be true.
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