Hyperx hx421c14fbk216 is a kit of two 1g x 64 bit 8gb ddr4 2133 cl14 sdram synchronous dram 2rx8 memory module based on sixteen 512m x 8 bit fbga components per module each module kit supports intelreg extreme memory profiles intel xmp 20 total kit capacity is 16gb each module has been tested to run at ddr4 2133 at a low latency timing of 14 14 14 at 12v additional timing parameters are shown in the plug n play pnp timing parameters section below