Hyperx savage black 8gb kit ddr4 2133mhz memory 2x4gb hyperx hx421c13sbk216 is a kit of two 1g x 64 bit 8gb ddr4 2133 cl13 sdram synchronous dram 2rx8 memory modules based on sixteen 512m x 8 bit fbga components per module total kit capacity is 16gb each module supports intel xmp extreme memory profiles each module has been tested to run at ddr4 2133 at a low latency timing of 13 13 13 at 12v the spds are programmed to jedec standard latency ddr4 2133 timing of 15 15 15 at 12v