ECS 648FX-A R1 Sockel 478 AGP Mainboard Lila PCB 2,5GB RAM 2,8GHz Pentium 4

Fully tested and working, see CPU-Z screenshots for details. Latest BIOS (1.0c1) and new CMOS battery. I installed 2.5GB so if you want to run Windows 98 you can just remove two of the sticks to bring it down to 512MB, or run XP with 2.5GB.

eBay