 "Crucial - DDR4 4 GB DIMM 288-pin" " Crucial 288-pin CT4G4RFS8213 Server Memory CDWG.com
"More speed. More bandwidth. More efficient. Next generation DDR4 memory is here.Overcome one of your greatest server limitations: memory. From networking, cloud computing, and virtualization to HPC, Big Data and more, memory - dependent server applications require increasingly higher densities of memory and higher levels of performance than are attainable on current DDR3 technology. Enter Crucial DDR4 server memory.This product is a 4GB DDR4 server module that operates at speeds up to 2133 MT/s and has a CL15 latency. It is a Registerred DIMM (RDIMM) with Error Correction Code (ECC). It conforms to the industry standard DDR4 RDIMM layout of 288 pins and is compatible with systems that take DDR4 2133MT/s RDIMM memory." 
 "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