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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 384GB (12x32GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-B0XQ-M0KN0 MPN CSE-GS7A-2000B

384 GB DDR5 ECC registered server memory kit with twelve 32 GB modules at 4800 MT/s for Supermicro SuperWorkstation SYS-551A-T

  • Total capacity384 GB (12 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 384 GB total capacity from 12 modules of 32 GB each
  • DDR5 4800 speed rated at PC5-38400 for high bandwidth
  • ECC registered RDIMM design protects data integrity in servers
  • 1 V operation reduces power draw per module
  • Validated for Supermicro SuperWorkstation SYS-551A-T compatibility

384GB DDR5 4800 ECC RDIMM Kit

This 384GB kit contains twelve 32GB DDR5 4800 registered ECC modules built for Supermicro SuperWorkstation SYS-551A-T and X13SWA-TF platforms. It targets IT teams running memory-intensive server workloads that require registered error-correcting memory at native 4800 MT/s. The 1Rx4 organisation and 1.10V operation match the platform's qualified memory list.

Upgrade from smaller registered DDR5 kits

Replacing a lower-capacity registered DDR5 kit with this 12-module set fills all available slots on the qualified workstation, removing the need for mixed-capacity populations. The jump is worth it when virtualisation, in-memory databases or large-scale simulation push the current memory ceiling and the platform's memory controller supports the full 384GB at 4800 MT/s without downclocking.

DDR5 registered ECC limits

Registered DDR5 at 4800 MT/s with CL40 latency introduces command-address latency overhead that benefits capacity scaling more than raw bandwidth per core. The 288-pin RDIMM form factor fits only DDR5 server and workstation boards with registered memory support; it will not work in consumer desktop or unbuffered laptop sockets. Mixing ranks or voltages outside the qualified vendor list risks training failures at this density.

How it compares

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

Price $11,231.99
Pricier than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (12 × 32 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $29.25 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K12
Total capacity384 GB (12 × 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 items384 GB (12 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 288-pin DDR5 RDIMM form factor match the Supermicro SYS-551A-T SuperWorkstation memory slots?

Yes, the 288-pin DDR5 RDIMM modules are the correct physical form factor for the Supermicro SYS-551A-T SuperWorkstation.

What is the correct population order for the 12 modules across the Supermicro X13SWA-TF motherboard channels?

Populate all twelve slots following the motherboard manual channel sequence; the common error is skipping a slot in a channel instead of filling each channel sequentially.

When should the 1.10V registered ECC modules be reseated or replaced?

Reseat modules if correctable ECC error counters increase over time; replace any module that logs uncorrectable errors or fails a full diagnostic pass.

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