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Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreader

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 128GB (2x64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-BN2R-PMQ6P MPN CSE-GS7A-2000B

128 GB DDR5 ECC registered server memory kit with two 64 GB modules running at 4800 MHz CL40 for Supermicro systems

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity across two 64 GB modules expands server memory headroom
  • DDR5 4800 speed rated at PC5-38400 delivers high bandwidth for demanding workloads
  • ECC registered design detects and corrects data errors to protect mission-critical operations
  • 1 V operating voltage reduces power draw while maintaining stability
  • Validated for Supermicro SuperWorkstation SYS-551A-T ensures drop-in compatibility

System-Specific DDR5 Server Memory

This NEMIX RAM kit delivers 128GB of DDR5 4800 registered ECC memory in a matched pair of 64GB modules. It is built for the SuperMicro SuperWorkstation SYS-551A-T and X13SWA-TF motherboards. System integrators and IT professionals use it to expand capacity in supported enterprise platforms.

Thermals and Power Profile

Each module operates at a standard 1.10V DDR5 voltage without a heat spreader, relying on chassis airflow for cooling. The registered design adds a clock cycle of buffering to stabilise heavy loads across multiple DIMM slots. Power draw scales with the 4800 MT/s data rate and 2Rx4 organisation during sustained workloads.

Capacity and Rank Configuration

The kit provides two 64GB dual-rank 2Rx4 RDIMMs for a total of 128GB at CL40 latency. Buyers who need a different total capacity, a single-module layout, or non-ECC unbuffered memory for consumer boards cannot use this specific kit.

How it compares

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

Price $3,617.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.27 per GB
Pricier than about 79% 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 numberMR38400-924K2
Total capacity128 GB (2 × 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
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules in my Supermicro SYS-551A-T, and what step is often missed?

Power down, open the chassis, align the notch on each 288-pin module with the slot key, press firmly until both retention clips click, then verify in BIOS that all 128GB at 4800MT/s are recognised; the step most often missed is seating both clips fully on each 64GB stick.

What maintenance or replacement will this 128GB DDR5 4800 ECC RDIMM kit need over its service life?

No scheduled maintenance is required; keep the server air filters clean so the registered modules stay cool, and if a 64GB stick ever fails the lifetime replacement warranty covers a direct swap.

What limit appears first when this 2Rx4 DDR5 4800 kit runs sustained workloads on the X13SWA-TF platform?

The CL40 latency at 1.10V sets the timing ceiling, so sustained throughput tops out at the rated 38400MB/s before any thermal or voltage headroom is reached.

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