General Knoppix support for those who've read the FAQ at the Wiki
Dell Poweredge R630 Server | 2x E5-2680v3 24 Cores | 128GB | 8x HDD Trays
$575.00
Dell PowerEdge R620 Server 2x E5-2660 v1 2.2GHz 16 Cores 256GB RAM 2x 300GB HDD
$89.99
Dell PowerEdge R730XD 28 Core Server 2X Xeon E5-2680 V4 H730 128GB RAM No HDD
$389.99
Dell PowerEdge R720 Server - 2x8c CPU,256Gb RAM, 128Gb SSD/3x900Gb SAS, Proxmox
$340.00
Dell Poweredge XC730xd 3.5 2x E5-2690 v3 2.6ghz 64gb JBOD 12x Trays 2x1100w
$239.99
CTO Dell PowerEdge R630 Server, 2x Xeon E5-2620V4, 64GB- 512GB RAM, 480GB SSDs
$246.67
DELL POWEREDGE T430 SERVER W/ DUAL XEON E5-2609 CPU & 16GB MEMORY
$329.00
Dell Poweredge R620 8-Bay CTO Pick your CPU & RAM Config | H710 Raid | 2x PSU
$209.99
DELL PowerEdge R730 Server 2x E5-2680v4 2.4GHz =28 Cores 32GB H730 4xRJ45
$284.00
Dell Poweredge R640 8 SFF Server No HDDs/ CPUs/ RAMs/ Cards/Fan/PSU
$419.99