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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 4800 CL40 ECC RDIMM Kit memory upgrade

SKU CH-7N3R-X217S

A 64GB quad-channel DDR5 4800 CL40 ECC registered memory kit built for Supermicro servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB total capacity from four 16 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design for server error correction
  • CL40 latency at 1.10 V operating voltage
  • Validated for SuperMicro SuperServer SSG-521E-E1CR24H and SSG-521E-E1CR24L

DDR5 4800 ECC RDIMM Kit

This 64 GB kit contains four 16 GB registered DDR5 modules rated at 4800 MT/s with CL40 latency and 1.10 V operation. It targets administrators upgrading Supermicro Storage SuperServer SSG-521E-E1CR24H, SSG-521E-E1CR24L or X13SEDW-F platforms that require ECC RDIMM memory.

Registered DDR5 bandwidth ceiling

The PC5-38400 interface delivers a fixed 38400 MB/s theoretical peak per module at 4800 MT/s. Registered buffering adds one cycle of command latency, so real-world throughput depends on the server memory controller and population rules rather than module speed alone.

1Rx8 rank configuration decides fit

Each 16 GB module uses a single 1Rx8 rank, giving four ranks per channel when fully populated. Supermicro platforms that limit channels to fewer ranks or require 2Rx8 organisation will not accept this kit, so verify the motherboard rank limit before purchase.

How it compares

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

Price $1,790.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.98 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 lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-618K4
Total capacity64 GB (4 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB (4 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I pick the 4x16GB kit or a different capacity for my Supermicro server?

This kit provides 64GB total across four 16GB modules, matching the 1Rx8 rank layout validated for the Supermicro SSG-521E-E1CR24H and SSG-521E-E1CR24L storage servers.

What does the DDR5 4800 CL40 rating mean when the memory is installed?

The modules run at 4800 MT/s with CAS latency 40 at 1.1V, delivering PC5-38400 bandwidth while the registered buffer and ECC maintain data integrity under sustained server workloads.

How does the 288-pin RDIMM interface limit speed or capacity in practice?

The 288-pin DDR5 RDIMM form factor locks the kit to DDR5 slots only; the registered design allows higher capacities per channel than unbuffered DIMMs, but the memory controller caps the final operating frequency.

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