This HP 672631-S21 compatible 16GB DDR3-1600MHz Dual Rank Registered ECC 1.5V 240-pin CL11 factory original RDIMM is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system. All our memory is built to strict JEDEC standards to meet or exceed the Tier 1 OEM's factory requirements. Our products are also guaranteed by federal law to not affect or void OEM warranties.
- Whether you are playing games, using heavy loaded OS or video editing software, the 16 GB of memory will make them run in a flash
- 1600 MHz of memory speed with Registered signal allows you to browse web, listen to songs and use routine software simultaneously
- 240-pin-pin DDR3-1600/PC3-12800 interface synchronizes electrical and clock signals for an efficient data transfer rate