I've just upgraded my CPU to a Q9650 and my OS to Windows 7 64bit. I'm currently running with 4GB of ram and would like to max out my board, which is 8GB, now that i'm running 64bit OS. I have a question about mixing RAM. I'm pretty confident with my findings during my research, but i'd like some input as to whether i'm correct or not. I see some people with similair posts saying its ok and some say not recommended.
currently i have an nForce 680i SLI mainboard and 4GB of RAM (see below):
Both sets are "completely the same in specs" except for the frequency (400MHz vs 800Mhz). I should have no problems adding ("mixing") 2 sticks of the faster 800HMz with the existing RAM, correct? the only consequence would be that the newer RAM would run at the slower 400MHz?
Also, if i do mix these, i assume i should put the older 400MHz in slots 1 and 3 and the new 800MHz into slots 2 and 4, correct? or does that not matter since the newer sticks will be running at the slower speed?