General Knoppix support for those who've read the FAQ at the Wiki
Dell PowerEdge R720 Server - 2x8c CPU,256Gb RAM, 128Gb SSD/3x900Gb SAS, Proxmox
$340.00
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
CTO Dell PowerEdge R630 Server, 2x Xeon E5-2620V4, 64GB- 512GB RAM, 480GB SSDs
$246.67
Dell PowerEdge R710 2.5" 2U Server 2x X5670 2.93GHZ 12-Core 128gb 2x 1TB SAS
$214.99
Dell R730 8B LFF 2x 2.40GHz 14C Intel Xeon E5-2680 v4 32GB RAM 2x 3TB HDD HBA330
$299.99
DELL PowerEdge R730 16SFF Server 2x E5-2690v4 =28 Cores No RAM/ HDD H730 4xRJ45
$232.97
DELL POWEREDGE T430 SERVER W/ DUAL XEON E5-2609 CPU & 16GB MEMORY
$329.00
DELL PowerEdge R630 8SFF Server 2x E5-2650v4 2.2GHz =24 Cores 32GB H730 4xRJ45
$250.00
Dell PowerEdge R530 | Xeon E5-2603v4 | 16GB DDR4 Ram | No HDDs #73
$200.00