 "HyperX FURY - DDR4 64 GB: 4 x 16 GB DIMM 288-pin" " HyperX 288-pin HX421C14FBK4/64 System Memory (RAM) CDW.com
"HyperX HX421C14FBK4/64 is a kit of four 2G x 64-bit (16GB) DDR4-2133 CL14 SDRAM (Synchronous DRAM) 2Rx8, memory module, based on sixteen 1G x 8-bit FBGA components per module. Each module kit supports Intel Extreme Memory Profiles (Intel XMP) 2.0. Total capacity is 64GB. This module has been tested to run at DDR4-2133 at low latency timing." 
 "Corsair 64GB Vengeance LPX DDR4 2666MHz RAM/Memory Kit 4x 16GB"@en 16GB LN69002 - CMK64GX4M4A2666C16 | SCAN UK"@en
"64GB (4x16GB) Corsair DDR4 Vengeance LPX Black PC4-21300 (2666), Non-ECC Unbuffered, CAS 16-18-18-35, XMP 2.0, 1.2V      "@en 
 Specifications Size 64GB (4x16GB) Memory Model Vengeance LPX Black Max. Memory Channels Provided by Kit Quad (4) Memory Type DDR4 Memory Type (ECC) Non-ECC Memory Type (R/U) UDIMM (Unbuffered) Memory Speed PC4-21300 (2666) Pins 288 CAS Latency 16-18-18-35 Voltage 1.2 V Validated Compatible with AMD X399 Cooler Anodised Aluminium Heatspreader Features Black PCB XMP 2.0