General Knoppix support for those who've read the FAQ at the Wiki
IBM Power S822 8284-22A 12SFF Power8 3.89GHz 6Core 64GB RAM No HDD Server System
$359.99
IBM Power S822 12-Bay Server System Power8 Core 3.42Ghz DVD-Rom Drive 64GB No HD
$349.99
IBM System X3250 M3 Server 8GB RAM Intel Xeon x3440 2.53ghz (NO HDD)
$41.99
$209.99
VINTAGE IBM PC SERVER MODEL 325 Beige Tower Computer
$799.00
IBM Power8 S822L 20-Core 3.42GHz 256Gb 1.2Tb 40G Elastic Storage Server 5148-22L
$599.95
IBM System X 3550 M3 Server 80GB RAM Dual 2.67GHz Xeon Six Core X5650; 6128384
$129.95
IBM Server eServer | IBMR1000 | UPS 1000VA 700W W/New Batteries
$115.00
IBM System X3650 Server M2 2 x Xeon X5570 2.93 Ghz w/128 GB/DVDRW
$137.95
IBM 44T1203 Flex System x440 system board 47C2269 w60
$499.10