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Green circuit board with black memory chips, no heat spreader, 288-pin DDR5 RDIMM

NEMIX RAM

NEMIX RAM 32GB DDR5 4800 ECC RDIMM CL40 1Rx4 ASRock W790 WS

SKU CH-XF9S-1HAYE

32 GB DDR5 ECC registered server memory at 4800 MHz, CL40, 1.1 V, 1Rx4 for ASRock W790 WS workstations

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 32GB

Show 3 more
  • 32GB DDR5 capacity handles heavy workloads
  • ECC registered design protects data integrity
  • 4800 MT/s speed with CL40 latency
  • 1V operation reduces power draw
  • Validated for ASRock W790 WS motherboard

32GB DDR5-4800 ECC RDIMM

This 32GB DDR5 4800 module delivers registered ECC memory for the ASRock W790 WS workstation motherboard. It operates at 1.1V with CL40 latency and a 1Rx4 rank structure. The 288-pin RDIMM form factor targets professionals who need error-correcting capacity for stable compute workloads.

Verify registered DDR5 support

Confirm the motherboard accepts registered DDR5 RDIMMs and check the manual for approved slot configurations before ordering. The module uses a 1.1V operating voltage and 288-pin interface that must match the platform's memory controller requirements. Ensure the BIOS revision supports this capacity and speed combination.

Sustained load stability with ECC correction

Under continuous workloads the registered buffer reduces electrical load on the memory controller while ECC corrects single-bit errors in real time. The CL40 timing and 1.1V operation maintain consistent throughput without thermal throttling concerns on passively cooled modules. This behaviour suits long-running server and workstation tasks where data integrity outweighs peak bandwidth.

How it compares

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

Price $856.99
Pricier than about 59% 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 $26.78 per GB
Pricier than about 74% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K1
Total capacity32 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 systemsASRock
In the box
Included items32 GB (1 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Other versions of this model

5 more in the same range

Questions about this item

Does the 288-pin DDR5 RDIMM come alone or with extra parts?

The package contains one 32GB module; no cables, brackets or additional components are included.

How do I decide between the 1Rx4 CL40 1.10V stick and another capacity?

This part number MR38400-314K1 is a single 32GB registered ECC DIMM; choose it when your ASRock W790 WS board needs one 4800 MT/s rank.

What does the 4800 MT/s rating deliver once installed in the W790 WS?

The module runs at DDR5 4800 with CL40 latency at 1.10V, providing registered ECC bandwidth of PC5-38400 for the workstation platform.

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