DVM26R4T4/64Gis a registered 8Gx72 memory module, which conforms to JEDEC's DDR4-2666, PC4-2666standard. The assembly appears as Dual-Rank(2 physical ranks / 2 logical ranks). Each rank is comprised of eighteen 8Gbx4 DDR4-2666 SDRAMs.One EEPROM is used for Serial Presence Detect and a combination register/PLL, with Address and Command Parity, is also used. Both output driver strength and input termination impedance are programmable to maintain signal integrity on the I/O signals in a Fly-by topology. A thermal sensor accurately monitors the DIMM module and can prevent exceeding the maximum operating temperature of 95C.