I use a tiny laptop; its processer is 1.1 GHz, and 504 MB of RAM. It's also only a single-core computer (Windows XP). That's pretty slow, so I usually render my Terragen 2 pictures on a bigger, faster computer that's got 2.6 GHz, (Windows Vista), Dual-core, and 2 GB of RAM. And I just realized I voted 64-bit Vista but that compute ris 32 bit. Oops.