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Author Topic: 6990 x3 overclocking issue  (Read 1301 times)
jstarBTC
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June 16, 2011, 05:45:55 PM
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Hi all. Running 3 6990s overclocked. Initially all 6 cores start mining at around 400 mhash but after a few min the total hash rate drops to about 1800. Some run about 350 others below 250. If i kill one of the miners the others the pick up the slack of the killed miner to get back to the same hash rate.

Anyone running into this? Ive tried all sorts of ovrrclocking and aggression settings. What info can i provide that would be useful for advice?
Using aticonfig and amdoverdrivectrl with phoenix.
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June 18, 2011, 03:44:48 PM
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Hi all. Running 3 6990s overclocked. Initially all 6 cores start mining at around 400 mhash but after a few min the total hash rate drops to about 1800. Some run about 350 others below 250. If i kill one of the miners the others the pick up the slack of the killed miner to get back to the same hash rate.

Anyone running into this? Ive tried all sorts of ovrrclocking and aggression settings. What info can i provide that would be useful for advice?
Using aticonfig and amdoverdrivectrl with phoenix.

I found that I have to restart aticonfig sometimes when it looses the clock settings. This can happen when switching monitors or just randomly even. Another issue can be that the clock rate can drop automatically when the card is overheating.
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