I've just got 2GB DDR2 PC6400 G.skill (F2-6400CL5D-2GBNQ) and it doesn't seem to want to run quite properly. One stick passes memtest fine at 800Mhz, but the other one gets a few errors. The rated voltage is 1.8v-2.0v When it's running at 2.0v I can get 533mhz stable but 666mhz - 800mhz I always get 2 errors in test 5. On default settings with both DIMMS I get about 100 errors. Do you guys reckon this is grounds enough to RMA it? or should I just accept it and maybe up the voltage a little bit to see if I can get it stable at 800mhz?