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Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 ECC RDIMM CL40 1.1V memory upgrade

SKU CH-3WCX-W5DFR

64 GB DDR5 ECC registered DIMM kit with two 32 GB modules at 4800 MT/s and CL40 latency

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB kit expands server capacity with two 32 GB modules
  • DDR5 4800 MT/s speed delivers high throughput for dense workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1 V operation reduces power draw per module
  • Validated for ASUS RS720Q-E11-IM immersion-cooled server

Server-grade DDR5 ECC RDIMM kit

This 64 GB kit comprises two 32 GB DDR5-4800 registered DIMMs built with ECC and a CL40 latency profile. It targets administrators upgrading ASUS RS720Q-E11-IM immersion-cooling servers where registered memory is mandatory.

288-pin registered modules without heat spreaders

Each stick runs at 1.10 V and uses a 1Rx4 organisation based on major OEM DRAM from Samsung, Micron or Hynix. The bare PCB design fits dense 2U4N trays where tall spreaders would block airflow or interfere with immersion manifolds.

Matched pair validated for ASUS RS720Q-E11-IM

The kit ships as a tested 2 x 32 GB set under part number MR38400-314K2, eliminating the guesswork of mixing modules. Rigorous stress testing under load is performed before dispatch so the server can be returned to production immediately after installation.

How it compares

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

Price $1,799.99
Pricier than about 67% of the 21,161 comparable items (median $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 $28.12 per GB
Pricier than about 79% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K2
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What DDR5 standard does the PC5-38400 rating support and what speed does it cap at?

The kit is rated PC5-38400, which corresponds to DDR5 4800 MT/s. The modules will run at up to 4800 MT/s on compatible ASUS server platforms.

What physical slot and form factor do these 288-pin RDIMMs require?

Each 32 GB module is a 288-pin DDR5 RDIMM measuring 1Rx4. They fit standard DDR5 RDIMM slots on the ASUS RS720Q-E11-IM motherboard.

How are the two modules installed and which step is often missed?

Power down the server, open the chassis, align each module's notch with the slot key, press firmly until the retention clips click, then verify both modules are seated before closing the case.

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