 "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" 
 "Crucial - DDR4 8 GB DIMM 288-pin 2400 MHz / PC4-19200 CL17 1.2 V unbuffered non-ECC "@en | CT8G4DFD824A Novatech"@en
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 Product Specifications Brand Crucial Form Factor UDIMM Total Capacity 8GB Warranty Limited Lifetime Specs DDR4 PC4-19200 • CL=17 • Dual Ranked • x8 based • Unbuffered • NON-ECC • DDR4-2400 • 1.2V • Series Crucial ECC NON-ECC Speed 2400 MT/S Voltage 1.2V DIMM Type Unbuffered