This Dell A3721495 compatible 16GB DDR3-1066MHz quad rank registered ECC 1.5V 240-pin CL7 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.

• Editing high-resolution pictures, rendering 3D graphics and playing the latest games is not a big deal with 16 GB of memory that effortlessly manages them
• DDR3 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computer's performance
• 1066 MHz of memory speed with Registered signal and CL7 latency makes your computer great at multitasking