A-Tech 8GB DDR4 2666MHz ECC UDIMM 1Rx8 for Samsung M391A1K43BB2-CTD M391A1K43DB2-CTD Server RAM

Server DDR4 ECC UDIMM

This A-Tech module is an 8 GB DDR4 2666 MHz ECC UDIMM built for server and workstation platforms that require error-correcting unbuffered memory. It runs at the standard 1.20 V DDR4 voltage with CL19 latency and uses a single-rank 1Rx8 organisation on a 288-pin DIMM. The stick is validated as a direct replacement for Samsung M391A1K43BB2-CTD and M391A1K43DB2-CTD parts.

Buyers needing ECC UDIMM

It suits administrators upgrading or repairing systems that specifically call for DDR4 ECC unbuffered DIMMs at 2666 MHz. Builders whose platforms demand registered or load-reduced DIMMs, higher capacities per slot, or faster DDR4 speeds should look at other modules that match those requirements.

Sustained server workloads

Under continuous load the module maintains its rated 2666 MHz throughput and CL19 timings while the ECC circuitry corrects single-bit errors in real time. The 1.20 V operation keeps power draw predictable during extended compute or virtualisation tasks, and the major-brand chipset delivers consistent reliability across long duty cycles.