Hyperx fury black 4gb 1 x 4gb memory module 2133mhz ddr4 non ecc cl14 288 pin dimm 12v unbuffered hyperx hx421c14fb4 is a 512m x 64 bit 4gb ddr4 2133 cl14 sdram synchronous dram 1rx8 memory module based on eight 512m x 8 bit fbga components per module each module kit supports intel extreme memory profiles intel xmp 20 each module has been tested to run at ddr4 2133 at a low latency timing of 14 14 14 at 12v power supply vdd12v typical vddq 12v typical vpp 25v typical