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Green rectangular DDR4 RDIMM module with black memory chips on both sides, gold edge connector, no heat spreader

OWC

OWC 32GB DDR4 2133MHz ECC Registered RDIMM 2Rx4 1.2V server RAM

SKU CH-S228-5FHPG

32 GB DDR4-2133 ECC registered RDIMM, 2Rx4 CL15 at 1.2 V for servers and workstations

  • Total capacity32 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 32 GB capacity supports large server workloads
  • ECC registered design detects and corrects data errors
  • DDR4 2133 MHz speed matches PC4-17000 standard
  • Low 1.2 V voltage reduces power consumption
  • 288-pin RDIMM form factor fits server and workstation slots

OWC 32GB DDR4 ECC RDIMM

This OWC module delivers 32GB of DDR4 ECC registered memory at 2133MHz with CL15 latency. It operates at 1.2V and uses a 288-pin 2Rx4 RDIMM form factor. The part matches Samsung M393A4K40BB0-CPB specifications and is JEDEC compliant.

Suited for servers, workstations and NAS systems

This memory is designed for platforms that require ECC registered DIMMs. It will not work in standard desktop computers that use unbuffered non-ECC modules. Builders who need unbuffered memory or consumer DIMM types should choose a different product.

Fits 288-pin DDR4 registered slots

The module installs directly into compatible server or workstation motherboards that support DDR4 2133MHz registered ECC memory. No heat spreader is included, so airflow in the chassis should be adequate. Using matched modules helps maintain stability in multi-channel configurations.

How it compares

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

Price $200.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 32 GB
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $6.28 per GB
Cheaper than about 61% 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 nameOWC
Part number2R1D42R432 GB
Total capacity32 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

What type of motherboard slot is required for the 288-pin DDR4 ECC RDIMM?

A DDR4 RDIMM slot supporting registered ECC memory is required; standard desktop boards with unbuffered DIMM slots will not accept this module.

Can this 2Rx4 registered ECC module be mixed with unbuffered memory already installed?

No, registered ECC memory cannot be mixed with unbuffered memory; all slots must use registered ECC modules of matching specifications.

How can I verify the module is running at 2133 MHz CL15 after installation?

Check the BIOS memory information or use a system utility such as CPU-Z to confirm the reported speed is 2133 MT/s and CAS latency is 15.

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