Hyper X HX424C15FBK28 is a kit of two 512M x 64-bit (4GB) DDR4-2400 CL15 SDRAM (Synchronous DRAM) 1 Rx 8 memory module based on eight 512M x 8-bit FBGA components per module Each module kit supports Intel Extreme Memory Profiles (Intel XMP) 20 Total kit capacity is 8GB Each module has been tested to run at DDR4-2400 at a low latency timing of 15-15-15 at 12V Memory Size 8GB (2 x 4GB) Memory Type DDR4 Module Type DIMM Memory Speed DDR4-2400 M Hz Pin Configuration 288-Pin Registered Unbuffered Unbuffered Error Correction Non-ECC CL-t RCD-t RP-t RAS CL15-15-15 12V Heat Sink Yes (Black) Working Voltage 12V