Patriot Signature 8GB DIMM DDR3 CL11 PC3-12800 (1600MHz) PSD38G16002 PC3-12800 (1600MHz) Dual Data Rate 240-Pin Dual in-line memory module Non-ECC Unbuffered 2 Rank Double-sided module 7.8US Refresh Interval (8192 CYCLES/64MS) 1.5V Power Requirement Auto and self refresh capability PCB height: 1181(mil)