Adding Dell 16GB DDR4 2666MHz RDIMM server memory is one of the most cost-effective ways to improve your server performance. Random Access Memory (RAM) is a type of hardware that your computer uses to store information. RDIMM, a registered DIMM that provides high signal integrity - performing parity checking to detect improper addresses or commands - and increased performance for heavy workloads..Lifetime manufacturer limited warranty.Memory capacity: 16GB.This product is compatible with the following systems: PowerEdge C4130, C4140, FC430, FC630, FC830, M630, M830, T430, T630; Precision 5820, 7820, 7920; Precision Tower 5810; PowerEdge C6420, FC640, M640, MX740, MX840, R430, R440, R530, R540, R630, R640, R6415, R730, R740, R7415, R7425, R830, R840, R930, R940, T440, T640.Memory technology: DDR4 SDRAM - DIMM 288-pin.Memory form factor: RDIMM.Memory speed: 2666MHz.Server memory is a cost-effective way to improve your server performance.Features dual rank, registered.Data integrity check: ECC