I have a GA-P35-DS3P (Rev. 2.0) and a X3210. It works, but only up to 2.66mHz. For some reason it won't go past it, so I think I should RMA it once I find a time where I can be without a computer for 3+ weeks. My assumptions that the -EP35- and -P35- are similar except that one has a few extra settings in BIOS to make it "green."