850, if money is not an issue.
but wait for the SIS648. pretty good, and affordable. but, if u got a tight budget, then people would recommend AMD....
DDR platform chipsets are not as good as RAMBUS; intel`s quad-pumping FSB has a bandwidth that only RAMBUS and DDR400 can match. 850, 850E, and any DDR chipset supporting DDR400 qould be good.
"Is Celeron good?"
"No. Celeron is bad."
LOL