Just tried running Heaven benchmark and my GPU kicks up to @ 83c @ 81%/3850rpm fan speed, it then bombs out after it finishes the benchmark and Windows reports that my display driver has stopped working. I then have to reboot.
Update 2 - Ok this time round it completed the benchmark, thing is about mid way through my fps went kaput (I don't know if this is the norm, if it's testing the CPU or something?)
Anyhow, after about 5 minutes I decided to give Tombraider another go. I benchmarked first, I noticed the FPS was 20-30fps and was stuttering, but it did complete. I then loaded up my recent save point (which is at the beginning of the game) and the FPS was shot to death, 20-30fps, stuttering.. and about 30 seconds in this happens...
Just flicking on and off, so had to reset the PC.
Just to add my rig is brand new and is as follows:
i7 4770k
Gigabyte Z87X-UD3H Intel Z87
GeIL EVO Potenza 8GB 2400MHz Dual Channel Kit
Gigabyte Radeon R9 290X OC WindForce 4096MB
Corsair h100i
Corsair RM750w PSU
Corsair 600t (1 x 200mm intake 2 x SP120s top 1 x AF120 exhaust)
Nothing is overclocked in the system, everything is at stock.