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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 128GB (8x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-EFS1-RB9F7 MPN CSE-GS7A-2000B

Adds 128 GB of DDR5 ECC registered server memory in eight 16 GB modules at 4800 MT/s CL40 1.10 V for Supermicro systems

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB total capacity across eight 16GB modules
  • DDR5 4800MHz speed with PC5-38400 bandwidth rating
  • ECC registered design detects and corrects data errors
  • 1V operating voltage reduces power consumption
  • Validated for SuperMicro SuperWorkstation SYS-551A-T compatibility

System-Specific DDR5 RDIMM Kit

This 128 GB kit contains eight 16 GB DDR5 4800 CL40 ECC registered DIMMs built for the Supermicro SuperWorkstation SYS-551A-T. It targets IT professionals who need validated, server-grade memory for mission-critical workloads.

Registered ECC with 1Rx8 Organisation

The modules run at 1.10 V, use a 288-pin DDR5 interface and present a single-rank 1Rx8 layout with CL40 latency. Registered buffering and on-die ECC protect data integrity under sustained load, making this the decisive spec for compatibility.

Straightforward DIMM Installation

Installation follows standard server-board procedure: power down, open the chassis, seat each module until the ejectors click, then verify population order in the manual. The most common issue is mixing registered and unbuffered DIMMs, which prevents the system from posting.

How it compares

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

Price $3,400.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $26.57 per GB
Pricier than about 73% 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 numberMR38400-618K8
Total capacity128 GB (8 × 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 items128 GB (8 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How does the DDR5 4800 speed translate once the 8 modules are installed in the SuperWorkstation SYS-551A-T?

The eight 16 GB modules run at 4800 MT/s with CL40 latency, giving the workstation 128 GB of registered ECC capacity at the rated data rate.

What does the PC5-38400 rating cap in everyday use?

PC5-38400 is the peak transfer specification for DDR5 4800; the registered buffer and ECC overhead set the practical throughput ceiling at that same 4800 MT/s rate.

Will the 288-pin RDIMMs fit the SuperMicro X13SWA-TF motherboard without extra hardware?

Yes, the 288-pin DDR5 RDIMM form factor matches the X13SWA-TF memory slots exactly; no adapters or special brackets are required.

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