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Green rectangular DDR4 288-pin ECC registered DIMM module with black chips, no heat spreader

OWC

OWC 64GB DDR4 2933 PC4-23400 CL21 2Rx4 288-pin 1.2V ECC Registered RDIMM for Supermicro H12SST-PS

SKU CH-7WYA-CWZ8R

A 64 GB DDR4 2933 MHz ECC registered RDIMM for Supermicro H12SST-PS servers

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • ECC registered design protects data integrity in servers
  • 64 GB capacity in a single module for dense configurations
  • DDR4 2933 speed with CL21 latency for responsive throughput
  • 2 V operation reduces power draw under load
  • Compatible with Supermicro H12SST-PS and backward compatible to 2133, 2400, 2666 MHz

Server memory upgrade

This OWC 64GB DDR4 2933 ECC Registered RDIMM is a single 288-pin module built for the Supermicro H12SST-PS motherboard. It runs at 1.2V with CL21 latency and a 2Rx4 rank configuration. The part targets servers, workstations and NAS systems that require registered error-correcting memory.

Compatibility check

Verify that your H12SST-PS board accepts registered ECC DIMMs and that no unbuffered or load-reduced modules are already installed, as mixing types is not supported. The module is backward compatible with 2133, 2400 and 2666MHz bus speeds, so it will clock down if the system runs at a lower frequency. Ensure a free 288-pin DDR4 slot is available for the upgrade.

Target users

Suits administrators extending the life of a Supermicro H12SST-PS platform or building new server capacity with validated ECC registered memory. Not for desktop PCs, laptops or any system that only supports unbuffered non-ECC DIMMs. Buyers needing a different capacity, speed or form factor should look elsewhere.

How it compares

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

Price $362.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.67 per GB
Cheaper than about 68% of the 20,941 comparable items (median $8.19 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 number2R9D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard H12SST-PS

Other versions of this model

5 more in the same range

Questions about this item

Does the OWC 64GB DDR4 2933 module ship alone or with extra parts?

The package contains one 64GB 288-pin ECC Registered DIMM. No additional cables, brackets or tools are included.

Should I choose this 64GB 2Rx4 stick or a different capacity for the Supermicro H12SST-PS?

This single module delivers 64GB at 2933MHz CL21. Add more identical sticks to reach the board's maximum supported capacity.

Will the rated 2933MHz speed run at that frequency once installed in the H12SST-PS?

The module operates at 2933MHz CL21 and is backward compatible with 2133, 2400 and 2666MHz if the system requires a lower speed.

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