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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 32GB DDR4 2933MHz PC4-23400 CL21 1.2V 288pin ECC Registered RDIMM memory upgrade

SKU CH-H3MP-96K9K

32 GB DDR4 ECC registered DIMM running at 2933 MHz CL21 for Supermicro X11 server motherboards

  • Total capacity32 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB

  • ECC protection prevents data corruption in critical workloads
  • Registered design stabilises signal integrity for dense server configurations
  • 32 GB capacity expands memory headroom for virtualisation and databases
  • 2933 MHz DDR4 speed with CL21 latency delivers responsive throughput
  • Validated for Supermicro X11DPT-L, X11DPT-PS, X11DPU, X11DPX-T and X11DSC+ motherboards

Server ECC Registered RDIMM

This 32 GB DDR4 module runs at 2933 MHz with CL21 latency and 1.2 V operation. It is built for workstations, servers and NAS systems that require registered ECC memory. The 2Rx4 dual-rank organisation and 288-pin form factor match the listed Supermicro X11 motherboards.

Registered ECC cannot mix with unbuffered

Registered DIMMs use a buffer that adds one clock cycle and changes the electrical load on the memory bus. Motherboards designed for unbuffered memory will not initialise these modules. Backward compatibility covers 2133, 2400 and 2666 MHz speeds, but the registered signalling remains mandatory.

Verify motherboard supports registered ECC

Check that your Supermicro board is one of the X11DPT-L, X11DPT-PS, X11DPU, X11DPX-T or X11DSC+ models. Confirm the BIOS is current and that no unbuffered DIMMs are already installed. This product is not suitable for standard desktop computers.

How it compares

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

Price $208.99
Cheaper than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.53 per GB
Cheaper than about 60% 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 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
Compatibility
Compatible systemsSupermicro Motherboard X11DPT-L
Supermicro Motherboard X11DPT-PS
Supermicro Motherboard X11DPU
Supermicro Motherboard X11DPX-T
Supermicro Motherboard X11DSC+

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 32GB module or a different capacity for my Supermicro X11DPT-L?

This listing is for a single 32GB module; choose the quantity that matches the total memory your board supports and the number of free slots you have.

What does the 2933MHz rating deliver once installed in a server?

The module runs at 2933MHz CL21 at 1.2V, providing 23400 MB/s peak bandwidth per stick; the system will clock it down automatically if the CPU or chipset only supports lower speeds.

How does the DDR4 ECC Registered interface limit real-world use?

The 288-pin DDR4 ECC Registered form factor only fits server and workstation boards — it will not work in standard desktop motherboards and cannot be mixed with unbuffered DIMMs.

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