16GB (2x 8GB) DDR4 2666 Mhz Memory High Performance RAM for Desktop PC4 21300 5 Year Warranty Super Fast RAM Module Approved by all motherboard manufacturers Multiple compatibility verifications with mainstream DDR4 motherboards to make sure its stability with all motherboards on the QVL(Qualified Vendor List). Therefore, you wouldn’t’ have to worry about compatibility issues when purchasing high speed memory. With just 1.2 working voltage, saves 20% of power compared to the previous generation. Therefore, the heat generated from the product itself has also been reduced, and it can maintain the peripheral operating temperature around the system. The product shows perfect compliance with the specifications of JEDEC, and it has 100% product compatibility as well as quality reliability with INTEL’s latest X99 chipset Specifications : Product Dimensions : 133.4 x 31.3 mm Data transfer bandwidth: 21,300 MB/Sec (PC4 21300) Working voltage : 1.2V