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Two green DDR5 RDIMM modules without heat spreaders, 288-pin, 256GB kit

NEMIX RAM

NEMIX RAM DDR5 4800 256GB 2x128GB ECC RDIMM CL40 1.1V 2Rx4 Supermicro H13SRH memory upgrade

SKU CH-TJK4-1VQEA

A 256GB DDR5 ECC registered RDIMM kit with two 128GB modules running at 4800MHz CL40 1.1V, validated for Supermicro H13SRH motherboards

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

Size 256GB 2X128GB

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Speed 4800MHz

  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed with CL40 latency for rated performance
  • Registered ECC design corrects single-bit errors automatically
  • 10 V operation matches server memory-controller requirements
  • Verified fitment for Supermicro H13SRH motherboard

Exact-match DDR5 upgrade for Supermicro H13SRH

This 256 GB kit delivers two 128 GB DDR5 4800 RDIMMs built to the board's required 2Rx4 registered ECC specification. The modules run at 1.1 V with CL40 timing so the memory controller recognises full capacity at rated speed.

Servers that need registered ECC at 4800 MT/s

The registered architecture and ECC suit workloads that demand error correction and full-slot population on the H13SRH platform. Builders using consumer UDIMMs, SODIMMs or non-ECC memory should look elsewhere because the board will not support those form factors.

256 GB across two slots with DDR5-4800 headroom

Two 128 GB ranks populate a pair of 288-pin slots and sustain PC5-38400 throughput for virtualisation, database and compute tasks. Capacity ends at 256 GB with this kit; larger configurations require additional validated modules and available slots.

How it compares

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

Price $8,471.99
Pricier than about 85% 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 $33.09 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K2
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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 2 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

What motherboard must I already have for this 256GB DDR5 4800 ECC RDIMM kit to work?

The kit is validated for the Supermicro H13SRH motherboard and requires that board's 288-pin registered DIMM slots.

Will these 128GB 2Rx4 registered modules run alongside any existing RDIMMs I keep in the H13SRH?

The H13SRH manual defines the supported population order; follow its sequence so every slot runs at the rated 4800 speed and 1.1V.

How do I confirm the kit is operating at CL40 4800 after installation?

Check the BIOS memory information or a tool such as dmidecode; it should report DDR5-4800, CL40, 1.1V and the full 256GB capacity.

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