DESCRIPTION
HX426C16FB3AK2/64
64GB (32GB 4G x 64-Bit x 2 pcs.)
DDR4-2666 CL16 288-Pin DIMM Kit
HyperX HX426C16FB3AK2/64 is a kit of two 4G x 64-bit (32GB)
DDR4-2666 CL16 SDRAM (Synchronous DRAM) 2Rx8, memory
module, based on sixteen 2G x 8-bit FBGA components per module.
Each module kit supports Intel® Extreme Memory Profiles
(Intel® XMP) 2.0. Total kit capacity is 64GB. Each module has
been tested to run at DDR4-2666 at a low latency timing of 16-18-18
at 1.2V. Additional timing parameters are shown in the
Plug-N-Play (PnP) Timing Parameters section below.

Manufacturer’s product page