Memory capacity	1 x 32GB
Form factor	DIMM (PC)
Type	DDR4
Memory rank	dual rank
Speed	2666 MT/s
Clock speed	21300 MB/s
Timing diagram	19-19-19
First Word Latency	14.25 ns
Voltage	1.2 В
Cooling	without cooling
Strip profile	standard
More features	buffering (Registered) ECC
Added to E-Catalog	September 2018

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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Buy Samsung DDR4 1x32GB M393A4K40CB2-CTD

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	SAMSUNG 32GB ECC Registered DDR4 2666 (PC4 21300) Server Memory Model M393A4K40CB2-CTD DDR4 2666 (PC4 21300) CL19 ECC Registered Dual Rank 2R x 4 Newegg.com Delivery: in USA Report		$191.59 Buy in shop

	Samsung 32GB DDR4-2666 PC4-21300 RDIMM 1.2V 288-pin ECC Registered Memory RAM M393A4K40CB2-CTD7Y DDR4 2666 (PC4 21300) Newegg.com Delivery: in USA Report		$191.59 Buy in shop

	SAMSUNG M393A4K40CB2-CTD6Q Samsung DDR4-2666 32GB/2Gx4 ECC/REG CL19 Server Memory SA#M393A4K40CB2CTD6 DDR4 2666 (PC4 21300) Registered CAS Latency CL19 Newegg.com Delivery: in USA Report		$191.59 Buy in shop

	Samsung M393A4K40CB2-CTD Samsung 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory Refurbished M393A4K40CB2-CTD Shop for M393A4K40CB2-CTD Samsung 32GB DDR4-2666MHz PC4-21300 ECC Registered RDIMM CL19 2Rx4 1.2V 288-Pin Memory Module at E... moreTechBuy.com ETechBuy.com Delivery: in USA Report		$306.37 Buy in shop

	Samsung M393A4K40CB2-CTD7Y Samsung 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory Refurbished M393A4K40CB2-CTD7Y Shop for M393A4K40CB2-CTD7Y Samsung 32GB DDR4-2666MHz PC4-21300 ECC Registered RDIMM CL19 2Rx4 1.2V 288-Pin Memory Module at... moreETechBuy.com ETechBuy.com Delivery: in USA Report		$306.37 Buy in shop

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Good, affordable ECC memory

30 March 2021

Nothing remarkable. Good memory, works flawlessly, overclocking was not tried. We are talking about 32GB 2666 UDIMM.

Available ECC modules on Ryzen Threadripper.

It is worth pointing out for reference that the memory is dual-rank. It is not obvious to everyone, and you need to go to the manufacturer's website for clarification.

Verdict Gg: use Samsung M391A4G43MB1-CTD less than month

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