They are both under volted and overclocked, and chill seems to.ignore Sims 4 for some reason, eve online is prone to the same shutdowns too!
Edit:
Sorry this is wrong, they are undervolted only, using stock clocks for the targets.
25% power target, 1090 MV P7 1080 MV P6
1622 target clock p7 state, 1665 actual during Sims (locked at p7) believed to be becoming unstable due to voltage at light load even though can run under heavy load fine
Power kernel event 41, bugcheck 234
Dxkern and atimkdag (don't quote me on exact ATI driver reference it occasionally changes)
1200 superflower platinum psu, my 850 handled the two cards great at full load but again black screened like crazy, is a lot better now I have the 1200watt but is occasionally still doing it, temperature range 65-72C, HBM common temp 78 max usually. Both cards great under really heavy loads, it's driving me mad!