HP Compatible 8GB PC3-12800 DDR3-1600 2Rx4 1.5v ECC Registered RDIMM (HP PN# 698808-001) Compatible With HP Part Number: 698808-001 8GB PC3-12800 DDR3-1600 2Rx4 1.5v ECC Registered RDIMM For HP Servers only. Not compatible with HP laptops and home computers. Lifetime Warranty Third Party; 100% Compatible