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Four green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 512GB (4×128GB) DDR5 4800 PC5-38400 ECC RDIMM memory upgrade

SKU CH-TZ0G-VRETW MPN CSE-GS7A-2000B

512 GB kit of four 128 GB DDR5-4800 ECC registered RDIMMs for Supermicro SYS-551A-T workstations

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 512 GB capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity under load
  • Low 1.10 V operation reduces server power draw
  • Validated for Supermicro SuperWorkstation SYS-551A-T systems

512GB DDR5 ECC RDIMM kit for Supermicro workstations

This 512GB kit contains four 128GB DDR5 4800 registered DIMMs with ECC and a CL40 latency. It is built for the Supermicro SuperWorkstation SYS-551A-T and compatible X13SWA-TF motherboards that require registered memory.

DDR5 4800 registered ECC limits bandwidth

The modules run at 1.10V with a 4Rx4 organisation and no heat spreader. Registered buffering adds one cycle of command latency, and the fixed CL40 timing caps peak throughput at the rated PC5-38400 data rate for this platform.

Replaces smaller or slower DDR5 RDIMM sets

The jump is worthwhile when the workload needs the full 512GB capacity or when moving from lower-density 4800MHz registered kits that leave DIMM slots unpopulated. It is not for systems that require unbuffered UDIMMs or speeds above 4800MHz.

How it compares

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

Price $15,962.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.18 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 lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K4
Total capacity512 GB (4 × 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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Which capacity kit should I select for the SuperMicro SYS-551A-T workstation?

The kit contains four 128 GB modules for a total of 512 GB, designed as a matched set for that platform.

What does the DDR5 4800 speed rating deliver when installed in the SuperWorkstation?

The modules run at 4800 MT/s with CL40 latency at 1.1 V, providing the rated PC5-38400 bandwidth in the supported system.

How does the 288-pin RDIMM interface and ECC registration affect usable performance?

The registered ECC design adds a clock cycle for command buffering and enables error correction, which is required for stability in the target SuperMicro motherboard.

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