Depends on which computer. I own at least 5 or 6. I only really use 2.
1) The old OLD Inspiron 6000 model laptop. (Same as the current 1505 except with XP.) I only use it for WC3 and work related things.
It has: 512mb ram, 1.7GH processor, and a GeForce 6200.
2) A custom built computer running Windows 7. I use this powerhouse for gaming and modeling. (Mostly the latter. lol)
It has:
4gb ram, 3.0gh quad cpu processor that can be overclocked like heck, a Radeon 3870 (soon to have two of them), and a max download speed of 1mb per second. Oh, and for cooling, it has two 12inch fans that I built in.
Damn I miss my Geforce280... Still, two Radeon3870s should do the trick. Currently, I only have one though. D;