Hyperx savage 8gb kit 2x4gb ddr4 2800mhz intel xmp cl14 dimm memory hyperx hx428c14sb2k28 is a kit of two 512m x 64 bit 4gb ddr4 2800 cl14 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 intelreg xmp extreme memory profiles each module has been tested to run at ddr4 2800 at a low latency timing of 14 16 16 at 135v the spds are programmed to jedec standard latency ddr4