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February 16, 2016, 11:47:25 PM |
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I have several 280X's mining and I agree with what the others have posted, lower your core as it only adds more heat and power consumption, 1000 is even fine, also lower your memclock to 1500. I played with tons of settings and they only make the most minute differences in hash-rate, so you are better off saving on the power consumption.
As far as the hash-rate. yes with the increasing size of the difficulty/DAG file, 20.3 MHash is pretty average. I am getting ~ 21 MHash per 280X right now, down from 25-26 MHash about a month or two back.
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