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Two green circuit boards with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR4 2933 ECC RDIMM 64GB 2x32GB CL21 1.2V 2Rx8 ASUS WS C621E SAGE

SKU CH-FAXD-7762W

64 GB kit of two 32 GB DDR4 2933 ECC RDIMM modules at 1.2 V CL21, registered for full-capacity stability on the ASUS WS C621E SAGE workstation board

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered

Size 64GB 2X32GB

  • 64 GB capacity in a 2 x 32 GB kit for full-slot population
  • DDR4 2933 MHz speed rated at PC4-23400 for rated throughput
  • ECC registered RDIMM design corrects single-bit errors and buffers the controller
  • CL21 latency at 1.20 V for spec-matched timing and voltage
  • 288-pin 2Rx8 form factor verified for ASUS WS C621E SAGE motherboard

Exact-match upgrade for ASUS WS C621E SAGE

This 64GB kit delivers two 32GB DDR4 2933MHz PC4-23400 Registered ECC RDIMMs built to the board's required 2Rx8 rank, 1.20V voltage and CL21 timing. The modules use major OEM chips from Samsung, Micron or Hynix and carry no heat spreader. They are designed for server workloads where full-capacity recognition and error correction matter.

Straightforward 288-pin RDIMM install

Insert the DIMMs into the slots specified by the motherboard manual, observing the correct population order for registered memory. Because the kit matches the board's exact rank, voltage and timing, the system should recognise the full 64GB at rated speed without manual tuning. The most common issue is populating slots in the wrong sequence, which can prevent boot or limit capacity.

Suits builders populating an ASUS WS C621E SAGE

This kit is for users who need verified, registered ECC memory that runs at the board's native DDR4 2933 specification. It is not for systems that require unbuffered UDIMMs, SODIMMs, non-ECC modules or a different DDR generation. Buyers needing capacities beyond 64GB or speeds other than 2933MHz should consult the motherboard manual for supported configurations.

How it compares

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

Price $509.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $7.97 per GB
Typical for this category: the median of 20,941 items is $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 lineNEMIX RAM Original Series Server Memory
Model nameDDR4 ECC RDIMM Registered Server Memory
Part numberMR23400-328K2
Total capacity64 GB (2 × 32 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
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items64 GB 2 × 32 GB DDR4 2933 MHz PC4-23400 2Rx8 1.2 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

How do I confirm the kit is running at 2933 MHz with CL21 after installation?

Enter the BIOS or use a tool such as CPU-Z and verify the memory frequency shows 2933 MHz and the CAS latency reads 21.

What does the package contain and is anything else required?

The box includes the 64 GB kit as two 32 GB DDR4 288-pin RDIMM modules; no extra parts are needed for installation.

Which capacity version should I choose for the ASUS WS C621E SAGE?

This 64 GB kit (2 x 32 GB) matches the board's DDR4 2933 registered ECC specification and is the correct version for full-capacity population.

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