Kingston 8GB (4GBx2), 667MHz DDR2 SDRAM Memory Kit for HP Compaq (KTH-XW667/8G) Fully Buffered, ECC,240-pin, Server Memory CAS Latency (CL): 5 Compatible Models :HP/Compaq ProLiant BL20p G4 Server BladeHP/Compaq ProLiant BL460c Server Blade G1HP/Compaq ProLiant BL480c Server BladeHP/Compaq ProLiant BL680c G5HP/Compaq ProLiant DL140 G3HP/Compaq ProLiant DL160 G5HP/Compaq ProLiant DL380 G5HP/Compaq ProLiant DL580 G5HP/Compaq ProLiant ML150 G3HP/Compaq ProLiant ML350 G5HP/Compaq ProLiant ML370 G5HP/Compaq ProLiant xw460c Blade WorkstationHP/Compaq StorageWorks All-in-One 400rHP/Compaq Workstation xw6400HP/Compaq Workstation xw6600HP/Compaq Workstation xw8400HP/Compaq Workstation xw8600 FBDIMM for servers[server memory]