I'm planning on putting together a small server to colocate for my own personal use. It would run lighttpd w/ fastcgi and ruby on rails for my own personal webpage, as well as postfix and jabber. Possibly subversion as well. It is critical that it is small (preferably microATX) and that it is speedy enough to handle those few processes under light to moderate load. Small and speedy is the idea. But I have no idea what cheap hardware would be sufficient, having never constructed a webserver myself before. Maybe a Pentium 3, with 512mb of RAM? I dunno...
So I'm seeking advice from the astute denizens of this forum. If anyone has any recommendations for any hardware, including processors, memory, motherboards, cases, etc. that they think would work well in a small, light, and fast Arch server, I would very much appreciate it.
Thanks,
Joshua Heretic