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Green rectangular DDR4 memory module with gold edge contacts and black chips, no heat spreader

OWC

OWC 32GB DDR4 2933 ECC Registered RDIMM 2Rx4 CL21 1.2V PowerEdge C4140 CascadeLake

SKU CH-NRHD-R93XR

A 32 GB DDR4 2933 ECC registered RDIMM for PowerEdge C4140 CascadeLake servers

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

Capacity 32GB

Show 4 more
  • 32GB capacity supports demanding server workloads
  • ECC registered design prevents data corruption in critical applications
  • DDR4 2933MHz CL21 delivers responsive performance for PowerEdge C4140
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400, 2666MHz systems for flexible deployment

Server memory upgrade

This 32 GB DDR4 ECC registered RDIMM is built for the Dell PowerEdge C4140 running Cascade Lake CPUs. It delivers 2933 MT/s at CL21 with a 1.2 V operating voltage. The dual-rank 2Rx4 organisation fits the platform's registered memory requirement. Workstations and standard desktops cannot use this module.

Replaces slower DDR4

The module is backward compatible with 2133, 2400 and 2666 MT/s speeds, so it can replace older DDR4 RDIMMs in the same server. The upgrade is worthwhile when the system currently runs at lower frequencies or when additional capacity is needed for virtualisation workloads. It cannot be mixed with unbuffered or load-reduced ECC memory.

Single-slot capacity

Each stick provides 32 GB in one 288-pin slot, freeing remaining DIMM positions for further expansion. The registered design adds a clock cycle of buffering to maintain signal integrity across full memory populations. No heat spreader is fitted, so airflow in dense chassis is unimpeded. The module follows JEDEC and RoHS standards.

How it compares

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

Price $231.99
Cheaper than about 57% 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 $7.25 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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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 systemsPowerEdge C4140 (CascadeLake CPU)

Other versions of this model

5 more in the same range

Questions about this item

Will this 288-pin DDR4 RDIMM fit the memory slots in a PowerEdge C4140 server?

Yes, the 288-pin DDR4 ECC registered form factor matches the PowerEdge C4140 slot design for Cascade Lake CPUs.

What is the correct way to install this 2Rx4 module so the server recognises all 32GB?

Align the notch on the module with the key in the slot, press firmly until both retention clips click, and populate slots per the C4140 memory population guide for registered DIMMs.

Does the lack of a heat spreader mean I must add cooling when running at 2933 MHz?

The module is JEDEC-compliant at 1.2 V and operates within standard thermal limits; additional cooling is not required for normal server airflow.

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