HP Workstation XW6200 Xeon 3.0GHz - 80GB HDD - 2GB RAM - DVD-ROM - Windows XP Pro (refurb) £51.60 @ Schtrade Ebay
Cheap desktop, server or HTPC (with a cheap card like the HD 5450 or GT 210). Includes Windows XP.
Includes a graphics card but doesnt say which one, full specs below.
The HP xw6200 Workstation is a scalable, expandable, dual-processing workstation in an industry-leading small package. Designed for demanding, space-constrained environments, the HP xw6200 uses 64-bit technology with the Intel Xeon Processor for the power to crank through massive amounts of real-time data uninterrupted. A new tool-less chassis design allows easy access for service and upgrades.