400MHz is actual speed because of Dual Data Rate (DDR) it becomes effective 800MHz!
i didn't understand what you said... both memory sticks are of 800MHz so they should run in 800MHz separately,correct? please explain me elaborately. I am confused what is hapenning. These are my mobo FSBs. O.C means overclocked...
FSB 1600(O.C.)/1333/1066/800 MHz
DDR2 1066(O.C.)/800/667 MHz