I'm poor so my computer sucks, especially as the motherboard died a few months ago and I had to do some emergency rebuilding with the parts I had available. Still it runs civ ok, with only a bit of lag on the huge maps or when there's a really really big stack of units around. Multiplayer is laggy as hell but I can just about run a two player game with my bro.
Specs as follows.
AMD Athlon 3000+ 64bit. 2GHZ.
1.5GB of DDR RAM. I have another half gig stick somewhere but I suspect it's on its way out.
Radeon 9250 gfx card with 256MB onboard memory. Supposed to run at 8x AGP, actually runs at 2x despite my best efforts. Using Omega (3rd party) drivers because ATI just haven't got a clue how to make a graphics card that can handle video games.
Running 32 bit Windows XP Pro SP2. I used to have a really nice copy of WinXP Pro SP1 but the disc doesn't work anymore hence the downgrade to SP2, most annoying windows version ever. I've patched the TCPIP and turned off as much useless crap as possible so it's just about bearable.
One day I'll get a new computer but this had to be Frankensteined from hard to get old parts to maintain compatability with my ancient IDE hard drives.
Thankfully I'm good at building computers out of cheese and string. Here's a picture of a working computer cobbled together at a friend's house out of spare parts.
http://i159.photobucket.com/albums/t130/Charonicus/Image039.jpg
Yes, it was working whilst in that condition. ¬¬ We were swapping out parts constantly that's why its guts are all over the place.
Here are various parts. The laptop was dead, hence the experiment to try and build something that worked, so he could at least browse the net whilst waiting for his replacement.
http://i159.photobucket.com/albums/t130/Charonicus/Image040.jpg
Some of those bits had been laying around in a spare room for years. Fun!