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Four green DDR4 RDIMM sticks in static bags

NEMIX RAM

NEMIX RAM DDR4 2933 128GB 4x32GB CL21 ECC RDIMM ASUS Pro WS C422-ACE memory upgrade

SKU CH-S7YN-3D261

128 GB DDR4 ECC registered memory kit in four 32 GB modules at 2933 MHz, CL21, 1.2 V, validated for the ASUS Pro WS C422-ACE workstation

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered

Size 128GB 4X32GB

  • 128 GB capacity from four 32 GB modules for high-density workloads
  • DDR4 2933 MT/s speed with CL21 latency matches board specifications
  • Registered ECC architecture corrects single-bit errors and stabilises full-slot population
  • 20 V operation reduces power draw in multi-DIMM configurations
  • 288-pin RDIMM form factor fits the ASUS Pro WS C422-ACE workstation motherboard

Exact-match 128 GB DDR4-2933 kit

This 128 GB kit contains four 32 GB DDR4-2933 (PC4-23400) Registered ECC RDIMMs built to the exact rank, voltage and timing the ASUS Pro WS C422-ACE motherboard expects. The modules are CL21, 1.20 V, 2Rx8, 288-pin and use major-brand Samsung, Micron or Hynix DRAM so the memory controller recognises the full capacity at rated speed.

Build fit: four-slot population

Each stick is a 288-pin Registered RDIMM, not a UDIMM or SODIMM, so it fits the board's required form factor and population rules when all four slots are filled. Registered buffering offloads the memory controller, allowing stable operation at full capacity, while on-die ECC corrects single-bit errors before they cause silent data corruption or unplanned reboots.

Suited for ASUS Pro WS C422-ACE upgrades

This kit is intended for owners of that specific workstation board who need the full 128 GB validated configuration. Builders using a different motherboard, or who need unbuffered UDIMMs, SODIMMs, a different speed grade, or a smaller capacity, should verify their manual before buying.

How it compares

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

Price $1,102.99
Pricier than about 61% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $8.62 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 numberMR23400-328K4
Total capacity128 GB (4 × 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 items128 GB 4 × 32 GB DDR4 2933 MHz PC4-23400 2Rx8 1.2 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 1.20 V DDR4-2933 kit reach its rated speed when all four slots are populated on the ASUS Pro WS C422-ACE?

The kit is spec-matched to the board's memory-population rules, so it is recognised at the full 128 GB capacity and runs at the rated DDR4-2933 speed with CL21 timing.

How much heat will the modules generate during continuous server workloads without a heat spreader?

Registered ECC RDIMMs operate at 1.20 V and offload the memory controller, keeping power draw low even when all four 32 GB modules run fully populated around the clock.

Does the motherboard need a specific BIOS version or CPU to accept this 2Rx8 registered ECC kit?

The kit is validated for the ASUS Pro WS C422-ACE workstation motherboard; consult the board manual for approved DIMM population order and any BIOS requirements before installation.

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