Ive got 2x512 of g skill pc4400 LE ram and 2x512 pc4000 balistix running at 7,3,3,2.5 at 240 mhtz but ive noticed that since putting the g skill mem in my commant rate has gone from 1T to 2T, is this normal and is i run it at 1T would this cause probs? also is this mem setup usually stable (2 diff types of memory) or would a night of memtest show is this is stable or not? it seems to be fine at the mo but havnt ran memtest yet! 