. ADATA Premier DDR4 2666 unbuffered-DIMM memory is the latest upgrade solution that supports Intel's newest platforms for faster data transfer & enhanced power efficiency. Utilizing a 288-pin design operating voltage has been reduced from 1.5V on DDR3 to 1.2V which not only helps save power by 20% but also boosts transfer bandwidth speed to 21.3GB/s. Every chip in ADATA memory modules meets strict JEDEC & Ro HS standards ensuring compatibility stability & environmentally friendly products..