Server - ECC Registered: 4GB 400Mhz PC2-3200 DDR2 240-Pin DIMM ECC Registered Server Memory Module Sale $55.00 Retail $79.00
Desktop - 240-Pin DIMM: 4GB 1600Mhz PC3-12800 DDR3 Unbuffered Low-Density Non-ECC 240-Pin DIMM Desktop Memory Module Sale $50.00 Retail $89.00