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

This may be a question for Claymore, but what is the best measure for hashing speed? Is it the Total Round Time or the 4ch/hr? Or are they inversely proportional?