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Green DDR4 server memory module with black chips and gold contacts

SAMSUNG

SAMSUNG 16GB M393A2K43CB2-CTD8Q DDR4-2666 ECC RDIMM 2Rx8 CL19

SKU CH-20MJ-65AYX

16 GB DDR4 RDIMM with ECC running at 2666 MHz and CL19 latency

  • 16 GB DDR4 capacity for demanding server workloads
  • ECC RDIMM design detects and corrects memory errors
  • 2666 MHz speed with CL19 latency for responsive performance
  • 2Rx8 organisation optimises bandwidth on dual-rank modules

16 GB DDR4-2666 ECC RDIMM

This 16 GB DDR4 module runs at 2666 MHz with ECC error correction and a registered design. It is built for servers and workstations that require data integrity and stable operation under continuous load. The CL19 latency and 2Rx8 organisation suit standard registered DIMM slots.

Registered DIMM slot and DDR4 memory controller

The RDIMM format needs a motherboard that supports registered memory and DDR4 signalling; consumer boards without ECC support cannot use it. ECC and the register add a small latency overhead, so builders seeking the lowest possible timing for gaming or desktop overclocking should choose unbuffered non-ECC modules instead.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $137.99
Cheaper than about 58% of the 6,523 comparable items (median $188.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What is the CL19 latency of this DDR4-2666 ECC RDIMM?

The module operates at CL19 latency, meaning 19 clock cycles at 2666 MHz before data is available.

How much power does the 2Rx8 registered DIMM draw under continuous load?

As a standard DDR4 RDIMM, it runs at the JEDEC 1.2 V nominal voltage; the register adds minimal overhead compared with unbuffered modules.

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