CMS 16GB (4X4GB) DDR2 3200 400MHZ ECC REGISTERED DIMM Memory Ram Upgrade Compatible with Dell® Poweredge 2800 Ddr2 Dual Rank For Server Only - B48 System Specific Memory - Newegg.com
16GB (4 X 4GB) DDR3 1600MHz PC3-12800 240-pin Memory RAM DIMM Kit for Desktop PC by NEMIX RAM at Amazon.com
16GB (4x4GB) RAM Memory Compatible with HP Workstation Z200 ECC UNBUFFERED B126 | eBay
Servers - ECC Memory: HP D5G54AV - 16GB (4x4GB) PC3-12800E 16000Mhz 1.5V Unbuffered ECC DDR3 240-Pin Memory Ram for Servers - CPU Medics