it should work fine.
is there any reason why you think the memory would take a performance hit?
I guess I was just concerned if the Athlon 64 X2 4800+ required a certain speed memory.
This memory was used on a system w/ AMD XP 2100+ and I was just concerned if it was too old to work with the CPU I want to upgrade to.
Would I be making a mistake by not going with some DDR433,466, or 500 memory?