Top grade chips and components - Each Axiom memory module is manufactured to meet or exceed OEM specifications.Fully tested - All memory modules that leave our warehouse are fully tested to guarantee quality and reliability.Guaranteed compatibility - Axiom guarantees that each system specific module will work with its corresponding OEM computer.Lifetime warranty - Once you purchase an Axiom memory module, you never need to worry about failure because all Axiom memory modules come with a lifetime warranty.Free unlimited tech support - Speak to a real human being and not a computer message. Tech support is available to every one of our customers via phone or email.Physical SpecsDimensions: 133.35mm x 30.0mm x 4.0mm Weight: 0.04lb ECCN: EAR99 HTS: 8473.30.1140 MAIN OVERVIEW FEATURES: Memory Size: 8 GBMemory Technology: DDR3 SDRAMMemory Speed: 1600 MHzMemory Standard: DDR3-1600/PC3-12800Error Checking: ECCSignal Processing: RegisteredDevice Supported: WorkstationNumber of Pins: 240-pinForm Factor: DIMMThickness: 157.5 milWidth: 1.2"Length: 5.3"Weight (Approximate): 0.64 ozCompatibility: HP-Compaq - Workstation Z620Limited Warranty: Lifetime