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Eight green DDR5 RDIMM modules in static bags

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 256GB (8x32GB) DDR5 4800MHz memory upgrade

SKU CH-F0PC-X8NB3 MPN CSE-GS7A-2000B

256GB DDR5 4800MHz ECC registered server memory kit with eight 32GB modules for SuperMicro SYS-551A-T workstations

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256GB total capacity across eight 32GB modules for dense server workloads
  • DDR5 4800MHz speed delivers high bandwidth for data-intensive applications
  • ECC registered design corrects errors to maintain system stability under load
  • 1V operation reduces power draw in large memory configurations
  • Validated for SuperMicro SYS-551A-T and X13SWA-TF workstations

System-specific DDR5 kit for Supermicro workstations

This NEMIX RAM kit delivers 256 GB across eight 32 GB DDR5 4800 modules built for the Supermicro SuperWorkstation SYS-551A-T. Each stick is a 288-pin ECC registered RDIMM running at 1.1 V with CL40 timing. The 1Rx4 organisation suits dense server and workstation workloads that require error correction and registered signalling.

Thermals and power in typical operation

Modules operate at the standard 1.10 V DDR5 voltage without a heat spreader, relying on chassis airflow for cooling. Registered buffering and ECC add minimal latency overhead while keeping power draw predictable for the platform. The kit is validated for sustained loads in the qualified Supermicro system.

What the bundle provides

The package contains the full 256 GB (8 x 32 GB) matched set so the workstation can be populated in a single step. No additional software, cables or cooling hardware are included; the modules are ready for installation following the system manual. NEMIX RAM stress-tests every module before shipment.

How it compares

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

Price $7,560.99
Pricier than about 84% 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 $29.54 per GB
Pricier than about 84% 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 numberMR38400-314K8
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
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB (8 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the eight 288-pin DDR5 RDIMM modules in the SuperMicro SYS-551A-T, and which step is commonly missed?

Power down, open the chassis, align each module's notch with the slot key, press firmly until both latches click, then verify all eight are recognised in BIOS — the step often missed is seating every module fully so both latches engage.

What maintenance or replacement will this 256GB registered ECC kit need over its service life?

No scheduled maintenance is required; the modules have no heat spreaders or moving parts, so only a failed stick would need replacement under the lifetime warranty.

At what point does the CL40 latency at 4800MHz become the bottleneck during sustained workloads?

The CAS 40 timing at 4800MHz is the first limit reached under sustained memory-bound loads, as latency dominates before bandwidth or thermal constraints appear.

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