 "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
 "Crucial - DDR3 8 GB DIMM 240-pin" " Crucial 240-pin CT102464BD186D System Memory (RAM) CDW.com
"Expand the memory of your laptop with the Crucial System Memory. Ensure lag-free functioning and efficient multitasking by upgrading you system with this 8 GB DDR3 SDRAM. With Non-ECC parity and a CAS latency of CL13, it reduces delay and enables quick loading of programs. It is compatible with motherboards having DIMM 240-pin slots and DDR3-enabled chipset. Working at a supply voltage of 1.35 volts, this unbuffered system memory delivers an energy-efficient performance.8 GB RAM for PC to improving your system functionalityHigh data transfer rate with a memory speed of 1866 MHz" 