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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

SAMSUNG

SAMSUNG 3SA2666195R4-16GPBOP 16GB DDR4 2666 ECC Registered server RAM

SKU CH-RC61-SQRTT MPN 3SA2666195R4-16GPBOP

16 GB DDR4 2666 ECC registered server memory with CL17 timing and 1.20 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • ECC protection prevents data corruption with registered design
  • 16 GB capacity supports demanding server workloads
  • DDR4 2666 speed delivers 21300 MB/s bandwidth
  • CL17 timing ensures responsive memory access
  • 20 V operation reduces power consumption

16GB DDR4 2666 ECC Registered Module

This 16GB DDR4 2666 module delivers ECC Registered operation for server workloads. It runs at PC4 21300 speed with CL17 timing and 1.20V voltage. The 1Rx4 organisation suits multi-slot configurations in compatible platforms.

Compatibility Check Before Purchase

Verify that your motherboard supports DDR4 2666 Registered DIMMs and accepts 288-Pin ECC memory. Confirm the platform can address 1Rx4 rank density and operates at 1.20V. Registered modules will not function in consumer boards that require unbuffered memory.

Build Integration Notes

The module fits 288-Pin DDR4 slots without a heat spreader, leaving clearance for tight CPU coolers. ECC Registered operation protects data integrity in always-on environments. Buyers needing unbuffered memory or higher frequencies should select a different specification.

How it compares

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

Price $97.99
Cheaper than about 70% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $6.12 per GB
Cheaper than about 62% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSAMSUNG
Model nameM393A2K40BB2-CTD
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.07 kg
Package size165 × 51 × 13 mm

Questions about this item

Does the 288-pin DDR4 module ship alone or with any accessories?

The module ships as a single 16 GB stick; no heat spreader, cables or additional parts are included.

Which capacity and rank option should I choose for a dual-channel server board?

This is the only listed option — a 16 GB 1Rx4 registered ECC module at DDR4 2666.

What does the DDR4 2666 (PC4 21300) rating deliver in a live system?

It runs at 2666 MT/s with CL17 17-17-17 timings at 1.20 V, providing error-correcting registered bandwidth for compatible server platforms.

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