Hyperx hx424c12sb2k28 is a kit of two 512m x 64 bit 4gb ddr4 2400 cl12 sdram synchronous dram 1rx8 memory modules based on eight 512m x 8 bit fbga components per module total kit capacity is 8gb each module supports intel xmp extreme memory profiles each module has been tested to run at ddr4 2400 at a low latency timing of 12 14 14 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