UDIMMRDIMM

UDIMMRDIMM, which stands for Unbuffered Dual In-line Memory Module, is a type of random-access memory module primarily used in desktop computers. Unlike registered DIMMs (RDIMMs), UDIMMRDIMMs do not have a register chip to buffer the data between the memory controller and the DRAM modules. This lack of buffering can lead to slightly higher signal integrity issues at very high clock speeds but generally offers lower latency and power consumption compared to RDIMMs.

The "unbuffered" nature of UDIMMRDIMMs means that the memory controller directly drives the address and command signals to each DRAM chip on the module. This direct connection is simpler and can be faster for common desktop applications. UDIMMRDIMMs are distinguished by having 288 pins and are typically used in non-server environments, such as personal computers and workstations, where the number of memory modules and their electrical load are less demanding.

The term "dual in-line" refers to the fact that the connectors on both sides of the module carry independent electrical signals, doubling the data transfer capability compared to single in-line memory modules (SIMMs). UDIMMRDIMMs are the standard memory type for most consumer-grade motherboards and are commonly available in DDR3, DDR4, and DDR5 generations. When selecting UDIMMRDIMMs, users typically consider factors like capacity, speed (frequency), and CAS latency to ensure compatibility with their motherboard and processor.