I would stay away from Samsung. I have tried to use it in 3 clients systems, with no success.
The first time the memory was defective, replaced it w/ Crucial PC2700. Rock solid
2nd time it would not go over 140fsb, replaced w/ Corsair XMS PC-2700. Got it to 156fsb, stable.
3rd time it was flaky, got all kind of memory related BSOD. Replaced w/ Kingmax PC2700, no more BSOD.
I would get the Corsair, it O/C's well and is resonably priced.