Dell A1551865 4GB DDR2-667MHz RDIMM 2Rx4 CL5 Memory

Product Description

The Dell A1551865 is a 4GB DDR2 Registered DIMM (RDIMM) memory module, specifically designed to enhance the performance of compatible Dell server systems. Operating at a speed of 667MHz, this module provides a foundational level of memory capacity and bandwidth suitable for many enterprise applications of its era. The DDR2 technology represents an earlier generation of SDRAM, offering improvements over DDR but superseded by later standards. As a Registered DIMM, it features an onboard register that buffers the address and command signals between the memory controller and the DRAM chips. This reduces the electrical load on the memory controller, allowing for greater memory capacity per channel and improved system stability, which is particularly important in multi-processor server configurations. The 2Rx4 organization signifies two ranks of memory chips, each with four data bits, contributing to its performance characteristics. With a CAS Latency of CL5, the A1551865 offers a relatively quick response time for data access. It also includes ECC (Error-Correcting Code) functionality, which is crucial for server environments as it detects and corrects single-bit memory errors, thereby ensuring data integrity and system reliability. This module is a key component for maintaining the operational stability of older Dell PowerEdge servers that utilize DDR2 memory.