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Two green 288-pin DDR5 RDIMM modules, no heat spreaders, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (2×128GB) DDR5 4800 ECC Registered RDIMM CL40 1.1V 2Rx4 Supermicro H13SSH

SKU CH-HCRR-XJRBS

A 256GB DDR5 4800 ECC registered RDIMM kit with CL40 timing and 1.1V operation for Supermicro H13SSH 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

Show 30 more
  • 256 GB kit lets the Supermicro H13SSH run fully populated at rated speed
  • Registered ECC RDIMM offloads the controller and corrects single-bit errors on the fly
  • DDR5 4800 CL40 at 1.1 V matches the board's exact timing and voltage requirements
  • 2Rx4 dual-rank modules deliver high density per slot without exceeding population limits
  • Major-brand Samsung, Micron or Hynix DRAM chips ensure enterprise-grade reliability

Supermicro H13SSH DDR5 upgrade

This 256 GB kit contains two 128 GB DDR5 4800 registered ECC RDIMMs built for the Supermicro H13SSH motherboard. Each module runs at 1.1 V with CL40 timing and a 2Rx4 organisation so the board recognises the full capacity at rated speed.

Sustained enterprise workloads

Registered buffering reduces electrical load on the memory controller allowing every slot to stay populated at full density during continuous operation. On-die ECC detects and corrects single-bit errors in real time preventing silent data corruption that would otherwise crash production services.

DDR5 RDIMM platform limits

The 288-pin RDIMM form factor fits only motherboards wired for registered DDR5 memory; UDIMM or SODIMM systems cannot accept these modules. Population rules and maximum supported capacity vary by BIOS revision so the system manual must be consulted before installation.

How it compares

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

Price $8,420.99
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 $32.89 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

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Questions about this item

How much power does the 1.1 V DDR5 4800 kit draw when the Supermicro H13SSH runs fully populated all day?

Each 128 GB module operates at 1.10 V; total draw depends on the platform's memory-controller load and cannot be stated without board-level measurements.

What motherboard slot and population rules must the H13SSH already provide for this 288-pin RDIMM kit to work?

The board needs DDR5 RDIMM slots wired for registered ECC and must follow the manual's population order for 2Rx4 modules.

Will the CL40 2Rx4 registered ECC modules run at rated speed alongside older DDR5 RDIMMs already installed in the H13SSH?

Mixing ranks or timings forces the controller to the slowest common settings; the manual should be checked for supported mixed-population configs.

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