I would post this question in the dell forum on their website. Dell doesn't provide cpu upgrade information like hp; they would rather have you buy a new dell system than upgrade your old one. If your board has the Intel 965 chipset, then an older 1066 fsb core2 duo might work, such as the e6600. But if you want to use a wolfdale cpu (.45 nm) then the answer is no. Use cpuz, a free small file, to identify your motherboard model, ram, and cpu specs.