Dell DDR4 8GB 2666MHz 1Rx8 Registered DIMM (RJFJ1)

Dell DDR4 8GB 2666MHz 1Rx8 Registered DIMM is a server-grade memory module engineered for systems that support DDR4 Registered ECC memory. It offers 8GB capacity and operates at 2666 MHz, using a single-rank (1Rx8) organization and registered (buffered) signaling to improve reliability and stability in multi-module server configurations. The module is intended for use in compatible Dell servers and workstations where Registered ECC DDR4 is required for error correction and predictable performance under sustained loads.

Advantages

The registered design reduces electrical load on the memory controller when multiple modules are installed, enabling higher memory population and improved system stability. ECC-compatible operation helps detect and correct single-bit memory errors, contributing to data integrity in server workloads. The 2666 MHz frequency provides a balance between throughput and compatibility across a wide range of enterprise platforms that accept DDR4 Registered DIMMs.

Suitable for

• Enterprise servers and database hosts requiring ECC and registered memory
• Virtualization hosts where multiple DIMMs are populated for higher RAM capacity
• Workstations used for professional applications that demand memory reliability
• System upgrades to increase installed memory in supported Dell platforms

Key specifications

• Form factor: 288-pin DDR4 Registered DIMM
• Capacity: 8 GB
• Speed: DDR4-2666 (2666 MHz)
• Rank: Single-rank (1Rx8)
• Type: Registered (Buffered) with ECC support
• Voltage and timing: standard DDR4 operating parameters for 2666 MT/s modules

How to use

Install the module into a compatible server or workstation DIMM slot following the system manufacturer’s guidelines. Ensure the system supports DDR4 Registered ECC modules and check motherboard slot population rules for optimal channel configuration. Power down the system and disconnect power before installing the DIMM, align the notch with the socket, press evenly until the latches engage, then reconnect power and verify system POST/BIOS recognizes the new memory.

Usage recommendations

Populate memory channels in matched pairs or as advised by the server documentation to maintain optimal performance and stability. Use modules with the same specifications (speed, rank, registered type) when expanding memory, and apply firmware/BIOS updates from the system vendor to ensure full compatibility.