I have just gotten a third Sapphire Dual-x r9 280x
and added it to my set up. ( Asrock H81M-Plus, 4GB RAM, celeron duo, 1000W Silverstone Gold PSU, )
I've managed to get them all running at ~ 715, 719, and 750 khash/s
which I guess is ok..
Temps are stable at ~73 degrees on all cards.
But the third card seems to drop out after about 45 mins or an hour after starting cgminer.
The temp drops and khash/s drops out to 1.5 , 1.5 mhash/s
I've undervolted the cards (using Trixx) 2 are on 1.168 , and now I'm setting the voltage back to default on the problem card but it still seems to be dropping (it just dropped to 300khash/s) then eventually goes to idle.
edit: it is now dropping out within 3 mins of me starting cgminer up again
Does anyone have any clues or ideas what it could be? Would gladly appreciate any help Smiley
thanks
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