8GB ( 1x 8GB Module ) DDR3 1600 MHz ( PC3-12800 ) DDR3 DIMM ( 240-Pin ) ECC UDIMM ( ECC Unbuffered DIMM ) 1.35V - DDR3 Low Voltage Compatible Equivalent for HP 715281-001, 713979-B21, 713980-B21, A2Z50AA, 713752-081, 713979-B211, 713979-S21, A2H34AV, A2H33AV High performance Memory RAM upgrade designed for Server/Workstation Systems All modules undergo quality assurance testing to ensure dependable and reliable performance Please verify the supported memory (RAM) specifications of your system prior to purchase to ensure compatibility A-Tech provides a Lifetime Warranty for all orders & offers complimentary United States based Tech Support before, during, & after your purchase