8GB (2x4GB) Memory RAM 4 Dell PowerEdge 1800 DDR2-PC3200 FOR SERVERS ONLY B47 849005000420 | eBay
CMS 16GB (4X4GB) DDR2 3200 400MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with Dell® Poweredge 1850 Ddr2-Pc3200 for Server Only - B48 at Amazon.com