Patriot Memory Signature DDR3 16GB (2 x 8GB CL11 PC3-12800 (1600MHz) CAS 11 DIMM Kit with Heatshield 16GB (2 x 8GB) Non-ECC Unbuffered DDR3 Memory Kit PC3-12800 (1600MHz) Dual Data Rate, CAS 11 latency 1.5V Power Requirement Auto and self refresh capability