 "Crucial 4GB (1x4GB) DDR3L / DDR3 PC3-12800 1600MHz SO-DIMM Module "@en 1x4GB | CT51264BF160B Novatech"@en
"DDR3 / DDR3L, 1600MHz, CL11, 1.35v / 1.50v, Lifetime Warranty"@en 
 Memory Type DDR3 (PC3-12800) Capacity 4GB (1 x 4GB) Tested Speed 1600MHz Tested Latency 11-11-11-28 Tested Voltage 1.35v or 1.50v (Dual Voltage) Registered / Unbuffered Unbuffered Error Checking Non-ECC Memory Features N/A
 "HyperX Impact Black Series - DDR3L 8 GB SO-DIMM 204-pin" " HyperX 204-pin HX316LS9IB/8 System Memory (RAM) CDW.com
"HyperX Impact memory boasts the world's fast SO-DIMM frequency - 2666 MHz - to keep you ahead of the curve and level up your game. It automatically recognizes the platform it's plugged into and auto overclocks to the high frequency published with no need to adjust system BIOS settings. So you get extreme performance that supports notebooks and other small form factor systems using either AMD or the Intel CPU technologies with no hassle at all - even if you're a newbie." 