Celeron G1620 2xMSI 280X 1120/1500
v1.5 GPU Load 75-81%
v2.0 GPU Load 97-99%
Reinstall catalyst v13.12, reboot computer and disable overclocking.
Reinstall catalyst v13.12, reboot computer

Thanks, thanks, thanks!!!
4 x R9 280x (2x R9 280x MSI Gaming OC + 2x R9 280x Sapphire TOXIC + ASRock H81 BTC Pro + 8 GB DDR3 + Hasswell dualcore G3220 3.0Ghz) = TRT 342 - 360