3-3-3-7 at only DDR400.... not a good sign man... those sticks will probably hit a wall around 220-230 Mhz... However, they're rated at only 2.6v, so once you pump some volts through it, you *might* be ok... But I'm still leary of the CAS of 3 at only DDR400... usually thats a tale tale sign of some lower end chips being used... My crucial ballistix tracers will do 290Mhz 1:1 @ 1T with 3v... Sooooo close to 300Mhz @1T... its prefectly fine at 2T, but a ~1100 Mb/s loss in bandwidth isn't worth it to me...300HTT is no problem for my board- my cpu does 300x10 24/7 without batting an eyelash. Now if I could just get 10 more Mhz out of my RAM!!!