CORSAIR XMS 4GB 240-Pin PC RAM DDR3 1333 Desktop Memory Model CMX4GX3M1A1333C9 - Walmart.com
CORSAIR Vengeance 4GB (2 x 2GB) DDR3 2000 (PC3 16000) Desktop Memory Model CMZ4GX3M2A2000C10 - Newegg.com
Corsair CMK4GX4M1A2400C16R Vengeance LPX 4GB (1 x 4GB) DDR4 DRAM 2400MHz (PC4-19200) C16 Memory Kit Red CMK4GX4M1A2400C16R | Fast Server Corp. www.srvfast.com