Do You Think I Need a New Gaming PC?

Some say I should, my PC is 3 years old.

Core 2 Duo 1.8GHz(cant upgrade cuz my mobo wont support anything above C2D)

3GB RAM DDR2

ATI 4670 1GB

I can run Dragon Age: Origins at max settings. Other than that, the only game I play is WoW, the rest I play in PS3 cuz I need this PC for work as well.

Anyway, only games I plan to buy in the future are Mass Effect 2, DAO expansions, StarCraft 2. Diablo 3(if its next year Ill probably have a new PC by then)... So you guys think I should buy a new one or this will do for now?

Well Im planning to buy a new PC if not this year, next year for sure. Just wanna know if this will do for the rest of the year(esp. with StarCraft 2).

I already have a PS3 as I said.