This CT51264BD160B compatible 4GB DDR3-1600MHz Dual Rank Unbuffered 1. 35V 240-pin CL11 UDIMM 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. Lifetime manufacturer limited warranty. DDR3 SDRAM memory technology for high-performance solution. 8GB memory smoothly runs your games, photo, and video editing applications. Unbuffered signal processing. Data integrity check: non-ECC. This memory module is great for enhancing speed and efficiency of your desktop that use DDR3 memory. Meets or exceeds JEDEC standard. CL11 latency for quick operation. Low-voltage module uses 1. 35V. Up to 1600MHz memory speed delivers faster clocking rate. UDIMM 240-pin form factor fits perfectly in systems designed to accept this structure. Dual-ranked RAM for easy and fast access of data. AddOn - DDR3 - module - 8 GB - DIMM 240-pin - 1600 MHz / PC3-12800 - CL11 - 1. 35 V - unbuffered - non-ECC.