OFFTEK 8GB Replacement Memory RAM Upgrade for Dell PowerEdge T20 (DDR3-12800 - ECC) Server Memory/Workstation Memory at Amazon.com
CMS 16GB (2X8GB) DDR3 12800 1600MHz ECC Non Registered DIMM Memory Ram Upgrade Compatible with Dell® Poweredge T20 EccU for Server Only - B89 at Amazon.com
parts-quick 8GB Memory for Dell PowerEdge T20 DDR3 PC3-12800E ECC RAM Upgrade at Amazon.com