DDR4 SDRAM (Double Data Rate Fourth-Generation synchronous dynamic random-access memory) works on a higher speed than DDR3 due to increased in transfer rates and decreased in voltage. Normally DDR4 Laptops and Desktops doesn't fundamentally change the way memory operates. Memory Module efficiency and Higher bandwidth are achieved by sending separate activation, read, write or refresh operations underway in each unique bank group.
Crucial is globally acknowledged name in DDR4. Crucial DDR4 modules are normally available with capacity of 4GB, 8GB, and 16GB at 2133MHz, 2400MHz, and 2666MHz in both LO-DIMM (U-DIMM) and SODIMM form for Desktops and Laptops respectively.