General Knoppix support for those who've read the FAQ at the Wiki
HP Z440 WORKSTATION XEON E5-1603V3 @ 2.80GHz, 16GB RAM 250 GB SSD Win 11
$119.99
Dell Precision 5810 Workstation Xeon E5-1650 6C 3.5GHz 16GB 500GB Win10 K2200
$124.67
HP Z820 Workstation 20-Core 2.50GHz E5-2670 v2 128GB No HDD No OS
$284.89
SRF8T INTEL XEON GOLD 5218 2.30GHZ 16-CORE 22MB 125W CPU PROCESSOR
$297.00
Intel Xeon E5-2697 V4 2.30 GHz 18C 2011-3 2400MHz 45MB 145W SR2JV CPU Processor
$49.99
Intel Xeon Cascade Lake SRF93 2.20 GHz PLATINUM-8253 FCLGA3647 Processor Used
$450.00
SR1XP Intel Xeon E5-2680 v3 12 Core 30MB 2.5GHz LGA 2011-3 Grade A Processor
$4.66
Intel Xeon E5-2697A V4 2.6GHz CPU Processor 16-Core Socket LGA2011 SR2K1
$39.99
Intel Xeon Gold 6136 SR3B2 12-Core 3.0GHz 24.75MB LGA 3647 Processor
$37.31
Intel Xeon E3-1285 V3 3.6 GHz 8M Quad-Core SR14W CPU Processor
$49.50