If I recall correctly, an IBM. Got it back around 1995 or so. It ran Win 95, with the only other thing about it that I recall being that it had about 612 MB memory.
I do recall the next one a bit better, though, from 1998: a Compaq Presario running at 350 MHz with 64 MB RAM and I think 2 GB memory. It ran Win 98 and received a Riva TNT2 (PCI) upgrade pretty soon. I think the motherboard or processor was a K6-2, or maybe that's the chipset for one or the other. We actually ended up buying a 128 MB RAM stick for it a few years after we replaced it as an attempt to keep it useful for a while longer, but unfortunately that didn't really improve performance in any way that I could tell.
The third PC (2002) was a Dell 4450, I think. 2.2 GHz processor, 64 MB Geforce 3 card (don't recall model), 512 MB RAM, Windows XP, 80 GB hard drive. Used it for almost seven years before the processor fan died, causing the PC to refuse to boot at all. This rig cost almost three times as much as it should have, to be honest - I have no idea why we didn't go to a cheaper place.
My current desktop, from 2008, is a pre-built thing (as in, I chose the parts, they built it) from komplett.se. Dual cores clocking in at 3.0 GHz, 4 GB RAM, 320 GB hard drive, Vista 64, P5K motherboard, 8800GT 512 MB and, best of all, an Antec 900 chassis. It's got a window and blue lights! Unfortunately, the graphics card has died, so I'm relegated to my inferior laptop.
My laptop (2009), being an Asus and a gift, is not half-shabby on paper: 4 GB RAM, 2.16 GHz dual core and dual hard drives at 232/221 GB respectively (never used the second one, though). I think the screen is 19'' as well. Unfortunately, it's got a barely-functioning graphics card (Radeon 3400 512 MB) and uses Vista 32. Yep, I can't even take advantage of most of the specs. It's a shame I can't afford a new graphics card for my desktop, so I guess I'll have to stick to playing games from before I was a teenager if I want to get frame rates above said teens. Other than that I mostly use it for work, or at least I did when I was working.
Post edited November 28, 2011 by Whitecroc