Don't bother taking off the heat sinks unless you really have to know. If you're going to overclock, just try it and see what you can get out of the card. The only way you're going to be able to find out what ram is on the card is to take the hs off, but it doesn't matter what they say if it can only overclock a bit anyway. Check Leadtek's site out and see what ram is supposed to come on the card. Some 4ns ram cards can overclock more than the "theoretical" amount that a 3.8ns ram chip would do anyway.