I am not a Geek have posted up a review of some DDR 400Mhz (PC-3200) DIMM Ram by OCZ. Heres a quote:
"DDR RAM that will do 400MHz is nothing new. Video cards have been using RAM at 400MHz and faster for the past 18 months. However for system ram 400MHz is definitely new. OCZ is the first company to release a DDR 400 (PC-3200) DIMM. Whether you want to call it DDR 400 or PC-3200 it is not and official standard yet, in fact neither is PC-3000. PC-2700 only became an official standard about a week ago."