Full Details on Amazon.com : http://www.amazon.com/gp/product/B00EQ1PG9E?tag=tsukuyomi-20

Corsair Vengeance 8GB (2X4GB) DDR3 1866MHz (PC3 15000 ) Laptop Memory (CMSX8GX3M2B1866C10)

8GB 2x4GB DDR3L SODIMM kit for 4th Generation Intel Core i5 and i7 notebooks
compatible with 2nd and 3rd Generation Intel Core i5 and i7
1866MHz
10-10-10-32 latency
Voltage 135V also supports operation at 15V
Auto-overclocking with compatible notebooks no BIOS configuration required