We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular DDR4 RDIMM module, 288 pins, no heat spreader, 32GB capacity

NEMIX RAM

NEMIX RAM 32GB DDR4 2933MHz CL21 2Rx4 ECC RDIMM Dell PowerEdge R640 memory upgrade

SKU CH-7X95-DR9CX

32GB DDR4 2933MHz CL21 ECC registered RDIMM for Dell PowerEdge R640 servers

  • Total capacity32 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • ECC protection safeguards data integrity in critical workloads
  • Registered design stabilises signal for dense server configurations
  • 32 GB capacity expands memory headroom for virtualisation
  • 2933 MHz speed matches Dell PowerEdge R640 specifications
  • 20 V operation reduces power draw per module

Dell PowerEdge R640 32GB DDR4 RDIMM

This 32GB DDR4 2933MHz CL21 2Rx4 ECC registered DIMM is built for Dell PowerEdge R640 rack servers. It targets administrators expanding memory capacity in compatible Dell enterprise systems. The module uses major OEM Samsung, Micron or Hynix chips and runs at 1.2V without a heat spreader.

Verify DDR4 RDIMM slots and population rules

Confirm the server has free 288-pin DDR4 RDIMM slots and review the Dell R640 memory population guide for supported ranks per channel. Registered ECC modules must match the existing configuration; mixing unbuffered or non-ECC DIMMs will prevent boot. Check the current BIOS version for 2933MHz support.

Standard server thermals and 1.2V power draw

Operating at 1.2V, the module draws typical DDR4 RDIMM power and relies on the R640 chassis airflow for cooling. No heat spreader is fitted, so adequate front-to-rear airflow is required. Acoustic output is governed by the server fan profile, not the memory itself.

How it compares

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

Price $239.99
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 $7.50 per GB
Cheaper than about 54% 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 nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR4 2933 MHz RDIMM Registered Server Memory
Part numberMR23400-324K1
Total capacity32 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items32 GB (1 × 32 GB) DDR4 2933 MHz PC4-23400 2Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the module ship alone or as a kit with multiple sticks?

The package contains a single 32 GB DDR4 2933 MHz CL21 2Rx4 ECC RDIMM; no extra modules or accessories are included.

Is the 32 GB 2Rx4 version the only capacity offered for this Dell PowerEdge R640 upgrade?

The listed part number MR23400-324K1 corresponds to a 32 GB 2Rx4 registered DIMM; other capacities would carry different part numbers.

What does the 2933 MHz PC4-23400 rating deliver inside a PowerEdge R640?

It runs at 2933 MT/s with CL21 latency at 1.20 V, providing registered ECC throughput matched to the R640 memory controller.

More in Model-Specific Memory Upgrades

Similar items