I think I answered your question in another thread but I'll do it again:
My 2 512MB sticks of XMS3200c2 are about 14 months old and they run at DDR400, 2-3-3-6 in my Intel 875PBZ board just fine. They don't even run that good on the board that's their regualr home, a P4B533-E. The best I can get out of them on that board is DDR400 at 2.5-3-3-7. They are running asynchronously on the P4B533-E though, that may have something to do with it.