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Eight green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM DDR5 256GB 8x32GB 4800MHz CL40 1.1V ECC Registered RDIMM memory upgrade

SKU CH-9HBS-Y2CNM

A 256 GB DDR5 server memory kit of eight 32 GB registered ECC RDIMMs running at 4800 MHz CL40 and 1.1 V, validated for the Supermicro H13SSW motherboard

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 8X32GB

Show 24 more
  • 256 GB kit fills eight slots for maximum server capacity
  • DDR5-4800 speed matches the board's rated frequency for stable throughput
  • Registered ECC design corrects single-bit errors to protect critical workloads
  • 1 V operation meets DDR5 standard voltage for efficient power draw
  • Verified fit for Supermicro H13SSW motherboard ensures correct population rules

Server-grade DDR5 ECC RDIMM kit

This 256GB kit contains eight 32GB DDR5 4800MHz Registered DIMMs built for the Supermicro H13SSW motherboard. The modules run at 1.1V with CL40 latency and use a 2Rx8 organisation that matches the board's memory controller requirements. Registered buffering and on-die ECC protect data integrity in multi-socket server workloads. It is not suited for desktop boards that accept only unbuffered UDIMMs.

Thermals and power at rated speed

Operating at the standard 1.1V DDR5 voltage keeps power draw predictable across all eight slots when the system runs at 4800MHz. The modules have no heat spreader, so airflow through the server chassis manages module temperature during normal operation. Registered buffering reduces electrical load on the memory controller, helping overall platform stability. Noise and thermals remain governed by the server's own fan curves rather than the memory itself.

Behaviour under sustained load

Full population of all eight slots at 4800MHz is supported by the Registered architecture, allowing continuous throughput without down-clocking due to signal integrity limits. ECC corrects single-bit errors in real time, preventing silent data corruption during long compute jobs. The 2Rx8 rank structure maintains bandwidth consistency across extended sessions. Verify the motherboard manual for approved population order and maximum supported capacity before deployment.

How it compares

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

Price $7,141.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $27.90 per GB
Pricier than about 78% 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 numberMR38400-328K8
Total capacity256 GB (8 × 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
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 8 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How do I install this 8-module DDR5 4800MHz RDIMM kit in my Supermicro H13SSW, and what step do people often miss?

Power down and unplug the server. Open the chassis and locate the 288-pin DDR5 slots. Follow the motherboard manual's exact population order for all eight 32GB modules. Align each module's notch, press firmly until both clips lock. The step often missed is verifying the BIOS recognises the full 256GB at 4800MHz CL40 after first boot.

What maintenance or replacement will this registered ECC DDR5 memory need over its service life?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required. ECC corrects single-bit errors automatically. If a module fails, the lifetime replacement warranty covers a swap. Keep firmware updated per Supermicro guidance to maintain memory-controller compatibility.

What limit appears first when this 256GB DDR5 4800MHz CL40 kit runs sustained workloads on the H13SSW?

The memory controller's maximum supported capacity and population rules for the H13SSW are the first limit. All eight slots filled with 2Rx8 registered DIMMs at 1.1V 4800MHz CL40 hits that ceiling. Thermal throttling is unlikely without overclocking, but airflow must match the server's design specs.

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