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A single green 288-pin DDR5 RDIMM module without a heat spreader, 128GB capacity

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 128GB DDR5 4800 CL40 4Rx4 ECC RDIMM memory upgrade

SKU CH-F8Q4-JVJYR MPN CSE-GS7A-2000B

A 128GB DDR5 4800 CL40 4Rx4 ECC registered DIMM built for Supermicro SuperWorkstation SYS-551A-T systems

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB single module doubles server capacity
  • DDR5 4800 speed feeds data-intensive workloads
  • ECC registered design protects critical data integrity
  • CL40 latency at 1.1V balances response and efficiency
  • Validated for Supermicro SuperWorkstation SYS-551A-T compatibility

128GB DDR5 4800 ECC RDIMM Server Memory

This single 128GB DDR5 4800 module is built for Supermicro SuperWorkstation SYS-551A-T and Super X13SWA-TF platforms. It operates at PC5-38400 speed with CL40 latency and a 1.10V supply. The 4Rx4 registered design delivers high-capacity error-correcting memory for demanding server workloads.

Registered ECC for Stable Enterprise Operation

The module suits IT professionals running mission-critical databases, virtualization hosts or large-scale analytics on compatible Supermicro hardware. Builders who need non-ECC memory, lower-density sticks, or modules for consumer desktop boards should look elsewhere.

4Rx4 Rank Determines Platform Compatibility

The 4Rx4 organization is the critical specification that decides whether this RDIMM will function in your specific Supermicro system. Verify the motherboard memory-qualified vendor list for 4Rx4 support before purchase.

How it compares

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

Price $4,217.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.95 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 numberMR38400-744K1
Total capacity128 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 items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install this 288-Pin DDR5 RDIMM into the SuperMicro SuperWorkstation SYS-551A-T, and what step is often missed?

Align the notch on the module with the slot key, press firmly until both side clips click shut, then verify in BIOS that the 128GB module registers at 4800MHz with ECC active.

What maintenance or replacement will this 1.10V registered ECC module need over its service life?

No scheduled maintenance is required; the module either operates within spec or it fails, at which point the lifetime replacement warranty covers a direct swap of the 4Rx4 stick.

What limit appears first when this CL40 4800MHz memory runs sustained workloads on the X13SWA-TF motherboard?

The CAS 40 latency at 4800MHz sets the bandwidth ceiling; thermals stay low at 1.10V without a heat spreader, so latency is the first bottleneck under continuous load.

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