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Expand the RAM in your desktop computer with the 8GB (2 x 4GB) DDR4 SDRAM Memory Module Kit from B&H. This kit comes with two 4GB of 2133 MHz ECC DDR4 RAM memory modules, for a total of 8GB.
2 x HP 4GB DDR4 2133 MHz RDIMM Memory Module (Promo)
Upgrade the memory in your HP Z420, 440, 640, and 840 workstations using the 4GB DDR4 2133 MHz RDIMM Memory Module (Promo) from HP. This single RAM module features a 4GB capacity, a clock speed of 2133 MHz, a bus speed of PC4-17000, and a 288-pin RDIMM form factor. Adding more registered RAM to your workstation lets you experience faster start-up times, run more programs at the same time, and easily toggle between several open programs. By offering Error Checking and Correcting technology, this RAM will help your workstation encounter fewer errors that can corrupt data sets and introduce system issues. This RAM is protected by a limited 1-year warranty.
Compatible with the Following HP Hardware
HP Z400 Workstation Series: - HP Z420 Workstation - HP Z440 Workstation - HP Z440 Workstation (ENERGY STAR)
HP Z600 Workstation Series: - HP Z640 Workstation - HP Z640 Workstation (ENERGY STAR)
HP Z800 Workstation Series: - HP Z840 Workstation - HP Z840 Workstation (ENERGY STAR)