Well I'm confused. I bought a R9 290X to play with while Corsair has my GTX 770 that still works (and the dead one along with their leaky cooler) and after playing with it (got it Friday afternoon) It's not bad for gaming and I figured I would give it some time to fold Saturday. Initially all looked well, left the house came back and the computer was @ the Windows login screen after restarting on its own. figured it was an unstable OC on the card as I had bumped it a little over stock. Same result when I was away later in the day. Last night I killed CPU folding on the rig because I wasn't sure about the 4930K's settings that I had set in a hurry when switching to the crap cooler taking the H100i's place. Set it to folding last night, woke up this morning at the login screen again after yet another reboot. Took some time this morning to look through the log files for windows and nothing about the actual problem just the usual "power loss" type stuff.
Well I set it running Furmark earlier when I left assuming I would get the same result, but when I got home it was @ 68C and doing fine (It did hit 70C at one point). So far it hasn't died while folding with me watching it so no clue as to what's going on.
Current WU is 0x17:Project: 9101 (Run 405, Clone 0, Gen 63) and I'm running the 14.4 Drivers nice and fresh installed from AMD.
Again so far I can run any game for however long with no issues and any benchmark that I've tried, only folding makes the system reboot. I might fire up cgminer on it and mine some Doge to see if it can handle that...