Hyperx hx428c14sb2k864 is a kit of eight 1g x 64 bit 8gb ddr4 2800 cl14 sdram synchronous dram 2rx8 memory modules based on sixteen 512m x 8 bit fbga components per module total kit capacity is 64gb each module supports intel xmp extreme memory profiles each module has been tested to run at ddr4 2800 at a low latency timing of 14 17 17 at 135v the spds are programmed to jedec standard latency ddr4 2133 timing of 15 15 15 at 12v each 288 pin dimm uses gold contact fingers