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Green printed circuit board with black memory chips and gold edge contacts

OWC

OWC 32GB DDR4 2933MHz ECC Registered RDIMM CL21 1.2V 2Rx4 288-Pin

SKU CH-ZEGM-PHF53

32 GB DDR4 2933 MHz ECC registered RDIMM for servers and workstations, CL21 1.2 V 2Rx4 288-pin, backward compatible with 2133, 2400 and 2666 MHz

  • Total capacity32 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 32 GB capacity expands server memory headroom
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2933 MHz CL21 speed matches OEM specifications
  • 2 V operation reduces power draw per module
  • Backward compatible with 2133, 2400 and 2666 MHz systems

OWC 32GB DDR4 2933MHz ECC RDIMM

This 32GB DDR4 module runs at 2933MHz with CL21 latency and 1.2V operation. It is an ECC registered RDIMM built for servers, workstations and NAS systems. The 2Rx4 dual-rank design fits standard 288-pin DDR4 slots. It replaces Supermicro MEM-DR432L-SL01-ER29, MEM-DR432L-SL03-ER29 and MEM-DR432LC-ER29 parts.

Replaces slower DDR4 ECC RDIMMs

The module upgrades systems currently running 2133MHz, 2400MHz or 2666MHz DDR4 ECC registered memory. The jump is worth it when your workload benefits from the higher 2933MHz data rate and PC4-23400 bandwidth. It will not work in standard desktop computers that require unbuffered non-ECC memory. Builders needing unbuffered DIMMs or higher capacities per slot cannot use this registered module.

DDR4 288-pin registered interface limits

The 288-pin DDR4 registered form factor requires a motherboard with RDIMM support and a compatible memory controller. Mixing registered and unbuffered modules on the same channel is not supported. Maximum speed is determined by the platform's memory controller and populated slot count. Population rules for 2Rx4 modules may limit total channel capacity or achievable frequency on some server boards.

How it compares

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

Price $223.99
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 $7.00 per GB
Typical for this category: the median of 6,064 items is $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 number2R9D42R432 GB
Total capacity32 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

Questions about this item

Does the 288-pin DDR4 RDIMM fit a standard server DIMM slot?

Yes, the module uses the standard 288-pin DDR4 registered DIMM form factor used in servers, workstations and NAS systems.

What is the correct seating procedure for the registered ECC module, and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify the module height is even; the step often missed is confirming both clips have fully engaged.

Will the 1.2 V DDR4 2933 MHz module need any firmware update or replacement interval?

No firmware update is required; the JEDEC-compliant 1.2 V DDR4 module runs at 2933 MHz (also backward compatible with 2133, 2400, 2666 MHz) and has no scheduled replacement interval.

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