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Four green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 4800 CL40 ECC Registered RDIMM Supermicro H14SST-G memory upgrade

SKU CH-4N5E-HQSDP

A 256 GB kit of four 64 GB DDR5 4800 CL40 registered ECC RDIMMs at 1.1 V, built for the Supermicro H14SST-G motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 30 more
  • Full-speed 4800 MT/s DDR5 keeps the Supermicro H14SST-G running at rated throughput
  • 256 GB across four 64 GB modules fills every slot for maximum capacity
  • Registered ECC RDIMM offloads the memory controller and corrects single-bit errors on the fly
  • 1 V operation with CL40 timing matches the board's exact voltage and latency requirements
  • 288-pin DDR5 RDIMM form factor is the precise module type the H14SST-G expects

Exact-fit 256 GB DDR5 kit

This 256 GB kit contains four 64 GB DDR5-4800 registered ECC RDIMMs built to the Supermicro H14SST-G memory specification. Each module runs at 1.1 V with CL40 timing and a 2Rx4 organisation so the memory controller recognises full capacity immediately. The 288-pin RDIMM form factor matches the board's slot requirement exactly.

DDR5-4800 registered ECC limits

Registered buffering lets every slot run fully populated at the rated 4800 MT/s without overloading the memory controller. ECC corrects single-bit errors on the fly to prevent silent data corruption and unplanned reboots. The kit is fixed at CL40 latency and 1.1 V; no XMP or manual overclock profiles are provided for this server platform.

Replaces smaller or slower DIMMs

The kit upgrades systems running lower-capacity DDR5 RDIMMs or mixed-rank configurations that limit total memory or force reduced speeds. The jump is worth it when workloads need the full 256 GB at native DDR5-4800 throughput with registered ECC stability. It is not for boards that accept only unbuffered UDIMMs or require a different DDR generation.

How it compares

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

Price $6,871.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.84 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-924K4
Total capacity256 GB (4 × 64 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 4 × 64 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

Should I pick the 4x64 GB kit or a different capacity for the Supermicro H14SST-G?

The kit provides 256 GB total as four 64 GB modules, matching the board's 288-pin RDIMM slots and registered ECC requirements for full-capacity operation.

What does the DDR5-4800 rating mean once installed in the server?

The modules run at 4800 MT/s with CL40 latency at 1.1 V, delivering the exact speed and timing the motherboard's memory controller expects for stable, rated performance.

How does the registered ECC interface affect real-world capacity limits?

Registered buffering offloads the memory controller so all four slots can be fully populated at 64 GB each, while ECC corrects single-bit errors to prevent silent data corruption.

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