Kingston Technology 8GB (1x8 GB) 1333MHz DDR3 PC3-12800 240-Pin ECC DIMM Memory for Select HP/Compaq Servers & Workstations KTH-PL313E/8G 8GB Module of 1333MHZ DDR3 ECC Memory for HP/Compaq Specifically designed and tested for compatibility 240-pin unbuffered DIMM Backed by a lifetime warranty and free technical support From the industry leader in PC memory