1. Crucial 4GB Single DDR4 2400 MT/s (PC4-19200) SR x8 DIMM 288-Pin Memory - CT4G4DFS824A

    $57 on the way

    Speeds start at 2400 MT/s and faster data rates are expected to be available as DDR4 technology matures
    Increase bandwidth by up to 32%
    Reduce power consumption by up to 40%
    Faster burst access speeds for improved sequential data throughput
    Single Ranked, x8 based, Unbuffered DIMM
  2. Micron DDR4 SO-DIMM RAM 4GB

    $58 on the way

    4GB PC4-19200 DDR4-2400MHz non-ECC Unbuffered Laptop Memory chip
    Memory Type - 260-Pin SODIMM
    Error Correction - Non-ECC Unbuffered
    Data Transfer Rate - 2400MHz