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Green DDR4 RDIMM circuit board with black chips and gold contacts

SAMSUNG

SAMSUNG M393A1G40DB0-CPB 8GB DDR4-2133 ECC Registered memory upgrade

SKU CH-XXPN-WM4ZA

8GB DDR4 2133MHz ECC registered server memory module with CL15 latency and 1.2V operation

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4
  • ECC protects data integrity in server workloads
  • Registered design stabilises signal for 288-pin DDR4 modules
  • 8 GB capacity adds memory headroom for virtualised tasks
  • 2133 MT/s speed with CL15 latency supports PC4-17000 bandwidth
  • 2 V operation reduces power draw per module

Server DDR4 RDIMM

This Samsung M393A1G40DB0-CPB module is an 8GB DDR4-2133 ECC Registered DIMM built for server and workstation platforms. It operates at 1.20V with CL15 latency and a 1Rx4 organisation. The 288-pin form factor fits standard DDR4 RDIMM slots in compatible enterprise systems.

Not for desktop or laptop PCs

This memory is validated for server and workstation use only and will not function in consumer desktop or laptop motherboards. Buyers who need non-ECC unbuffered DIMMs for a standard PC should look at a different product category. Systems that cannot address registered ECC modules cannot use this part.

Registered ECC requirement decides fit

The single specification that determines compatibility is the registered ECC RDIMM design; only platforms that explicitly support registered ECC DDR4 at 2133MT/s can use this module.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $37.99
Cheaper than about 81% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $4.75 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameSAMSUNG
Model nameSamsung M393A1G40EB1-CPB
Total capacity8 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsFor Server, Not For PC

Questions about this item

Will this module fit a motherboard that accepts 288-pin DDR4 RDIMMs?

Yes, it uses the standard 288-pin DDR4 form factor and is built as a registered ECC RDIMM for server and workstation boards that support that type.

Can I mix this CL15 2133 MHz stick with slower DDR4 ECC registered modules already in my server?

The system will run all installed modules at the speed and timings of the slowest stick, so this CL15 2133 MHz module will down-clock to match older modules if they are also registered ECC DDR4.

How do I confirm the module is detected at 2133 MHz with ECC active after installation?

Check the BIOS memory information or the operating system hardware report; both should show 8 GB at 2133 MHz, CL15, 1.2 V, registered ECC, 1Rx4 organisation.

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