Add speed and reliability to your mission-critical servers with a 64GB DDR4-2666 RDIMM Memory Kit (4 x 16) from Crucial. It's not uncommon for server resources to come under increasing demand. Whether it's more load from user access, or increasing the amount of active VMs, this kit of registered memory modules can alleviate that pressure. It provides your server with DDR4 level speeds that process data at a rate of 2666 MT/s.