8GB ( 1x 8GB Module ) DDR3 1600 MHz ( PC3-12800 ) DDR3 DIMM ( 240-Pin ) ECC UDIMM ( ECC Unbuffered DIMM ) 1.5V - DDR3 Standard Voltage Compatible Equivalent for Hynix HMT41GE7MFR8C-PB, HMT41GU7AFR8C-PB, HMT41GU7BFR8C-PB, HMT41GU7DFR8C-PB, HMT41GU7MFR8C-PB 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