This HP 774172-001 compatible 16GB DDR4-2133MHz dual rank registered ECC 1.2V 288-pin CL15 factory original RDIMM is 100% guaranteed to be compatible with your system and to work right the first time. All of our server memory is built to strict JEDEC standards at one of the tier 1 facilities (Samsung, Micron, or Hynix). Our products are also guaranteed by federal law to not affect or void OEM warranties.

• 16 GB bar will run multiple applications together and enhance your computer's performance
• DDR4 SDRAM operates at an effective bus speed with minimal power consumption and as a result, you get optimal computer performance with an improved memory heat dissipation
• No matter how heavy and numerous the applications that you are using, 2133 MHz memory speed with CL15 latency will run them smoothly