Hey, gotta problem with my 5x280x rig. Always, after some time, one card will report as DEAD and then i cant close miner after some trying computer totally freezes. Using latest v5 build. stock clocks. Any ideas? Should update to 14.6 driver?
My 4x r9280x rig did similar with one card too. It did not go DEAD, but stopped hashing in reality while it still showed similar speed as earlier. Temp went down, fan stopped correspondingly.
Lowering the Mem speed of only that given single card solved the issue.