General Knoppix support for those who've read the FAQ at the Wiki
Dell PowerEdge R640 40 Core Server 2X Gold 6148 H730P CTO- Custom- Wholesale
$942.99
Poweredge R640 10 48GB 2xGold 6148 2.4GHZ=40Core 3x1TB SAS 12G H730P
$816.21
DELL R630 Server 2x E5-2695v3 GHz =28 Cores 64GB H730 4x 1.2TB SAS 4xRJ45
$376.00
DELL R630 Server 2x E5-2643v3 3.4GHz =12 Cores 64GB H730 4x 800GB SSD 4xRJ45
$470.00
Dell PowerEdge R620 Server 2x E5-2660 v2 2.2GHz 20 Cores 256GB RAM 1x 480GB SSD
$125.99
Dell Poweredge R210 II Server Xeon E3-1220 v2 3.1ghz Quad Core / NoRam / 1x Tray
$69.99
Dell PowerEdge R730XD 28 Core Server 2X Xeon E5-2680 V4 H730 128GB RAM No HDD
$389.99
Dell PowerEdge R620 Server - 256GB RAM, 2x8cCPU, 120Gb SSD/3x900Gb SAS, Proxmox
$320.00
Dell Poweredge R630 2x Xeon E5-2680 v4 2.4ghz 28-Cores / 128gb / H330 / 2x 1TB
$334.99
Dell PowerEdge R710 2.5" 2U Server 2x X5670 2.93GHZ 12-Core 128gb 2x 1TB SAS
$114.99