My friend is in process of building his system. He's so nice to let me take this kit few days for testing

Test system:

Intel Core i5 2500K @ 4.6GHz 1.300V
Cogage TRUE Spirit with dual fan configuration
Asus P8P67 BIOS 1204
G.Skill Ripjaws X DDR3-1333 7-7-7-21 1.5V 2x4GB

Few pics of the memory







DDR3-1333 7-7-7-21 1.5V






DDR3-1333 6-7-6-21 1.5V






DDR3-1600 7-8-7-24 1.675V
Yes, it's not good at DDR-1600, needs 1.675V






DDR3-1866 8-10-8-27 1.65V

No clue why CPU-Z showed 8-10-9-27, MaxxMEM showed correct info






DDR3-2133 9-11-9-27 1.65V






DDR3-2200 9-11-10-27 1.65V






DDR3-2250 9-12-10-27 1.675V

Final result because BCLK almost reaches the limitation






My verdict: this kit clocks very well, considering it's 8GB kit and low rated speed