Just finished putting together my other retro PC, this one is my XP machine (my other one is a Win98 build which I'll post up separately).

I picked this motherboard up from a junk pile on the nature strip LoL

Specs:

Case: Fractal Define 7 Mini
Motherboard: GA-H81M-DS2 (rev. 2.0)
CPU: i3
RAM: 512 MB
GFX: ASUS GTX 750 OC 2 GB
HD: Kingspec SATA 3
SFX: Sound Blaster X-Fi
OS: WinXP 32bit Professional

The build was very easy to assemble, none of the hassles that I had with my Win98 build. Basically I just plugged everything and turned it on and it just works.

I missed out on this era growing up as I'd moved over to consoles so I'm excited to revisit some of these old games on a PC.