Boost the capabilities of your HP Workstation and improve system performance and application responsiveness with low-power, high-speed DDR4 memory from HP.. Features. Compatible products. Z4 G4, Z6 G4, Z8 G4. HP segment. Business. Windows operating systems supported. Windows 10, Windows 7, Windows 8. Memory channels. Single-channel. ECC. No. Memory form factor. 288-pin DIMM. Component for. PC/Server. Memory clock speed. 2666 MHz. Internal memory type. DDR4. Memory layout (modules x size). 1 x 8 GB. Internal memory. 8 GB. Buffered memory type. Unregistered (unbuffered). Weight & dimensions. Height. 1.4 mm. Depth. 31.2 mm. Width. 133.3 mm. Logistics data. Harmonized System (HS) code. 84733020