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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 ECC RDIMM ASRock TRX50 WS memory upgrade

SKU CH-X5RP-X4GEQ

256 GB DDR5-4800 ECC registered dual-rank kit built for ASRock TRX50 WS workstations

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 256GB 2X128GB

  • 256GB capacity with two 128GB modules for large workloads
  • DDR5 4800 speed rated at PC5-38400 for high bandwidth
  • ECC registered RDIMM design protects data integrity
  • CL40 latency at 1.10V for stable operation
  • 288-pin 4Rx4 modules validated for ASRock TRX50 WS

ASRock TRX50 WS DDR5 kit

This 256 GB kit contains two 128 GB DDR5 RDIMMs built for the ASRock TRX50 WS workstation motherboard. Modules run at 4800 MT/s with CL40 latency and operate at 1.1 V. ECC and registered buffering protect data integrity in server workloads.

Suited for memory-intensive workstations

Professionals running virtualisation, large datasets or rendering benefit from the 256 GB capacity and error correction. Systems that require unbuffered UDIMMs, non-ECC memory or speeds above 4800 MT/s cannot use this kit.

Handles multi-VM hosts and big-data tasks

The 256 GB total and 4Rx4 organisation give headroom for dozens of containers or large in-memory databases. Workloads that need more than 256 GB per board or demand higher frequencies will exceed this kit's limits.

How it compares

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

Price $7,483.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $29.23 per GB
Pricier than about 83% 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 numberMR38400-744K2
Total capacity256 GB (2 × 128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

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Questions about this item

Does the ASRock TRX50 WS motherboard need to support DDR5 ECC RDIMM at 4800 MT/s before I install this 256GB kit?

Yes, the motherboard must accept DDR5 ECC Registered DIMMs running at 4800 MT/s with 1.1 V operation for the modules to function.

Can I mix these 128GB 4Rx4 RDIMMs with smaller registered ECC modules already in the system?

Mixing different capacity or rank registered ECC DIMMs is possible only if the motherboard firmware supports the combined configuration; check the board manual for supported population rules.

How can I verify the kit is running at the rated 4800 MT/s CL40 after installation?

Enter the system BIOS or use a hardware information utility to confirm the memory frequency shows 4800 MT/s and CAS latency reads CL40.

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