It's possible. Whether you should get one at all is the better question. Doesn't make a whole heck of a lot of difference with GRAW. The Cell Factor demo is nice, but if you have $200 to blow, I'd save it towards a new mobo and CPU.
also I have a compaq sr1810nx pc laying around. IT has pci express x 16 and 939 cpu. SHould i just upgrade that and sell off my current build? I would really like a core 2 duo setup, but i dont think that is going to happen.