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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 256GB (4x64GB) DDR5 4800MHz ECC RDIMM memory upgrade

SKU CH-8BEB-ZH33V MPN CSE-GS7A-2000B

Adds 256GB of DDR5 4800MHz ECC registered memory in four 64GB modules for Supermicro SuperWorkstation SYS-551A-T systems

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • 1 V operating voltage reduces power draw
  • Validated for Supermicro SuperWorkstation SYS-551A-T compatibility

256GB DDR5-4800 ECC RDIMM kit for Supermicro

This 256GB memory kit contains four 64GB DDR5 4800MHz registered DIMMs built for the Supermicro SuperWorkstation SYS-551A-T and compatible X13SWA-TF motherboards. It targets IT professionals and system integrators who need validated ECC registered memory for mission-critical server and workstation workloads. The modules operate at 1.10V with CL40 latency.

Four-module kit enables full 256GB capacity

The package delivers four matched 64GB modules (2Rx4 organisation) so a four-slot motherboard can reach the full 256GB capacity in a single installation. Buyers who need more than four DIMM slots or a different total capacity cannot use this specific kit and must select another part number.

DDR5 4800MHz ECC registered RDIMM

The decisive specification is the DDR5 4800MHz ECC registered RDIMM format with 2Rx4 rank architecture and 1.10V operation. Systems that require unbuffered UDIMMs, a different speed grade, non-ECC memory, or a different rank configuration will not accept these modules.

How it compares

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

Price $6,610.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $25.82 per GB
Pricier than about 71% 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 numberMR38400-924K4
Total capacity256 GB (4 × 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 items256 GB (4 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Do the 64 GB DDR5 modules need any firmware updates or periodic re-seating to keep ECC working?

No firmware updates or re-seating are required; the registered DDR5 modules run at 1.10 V with on-die ECC that operates continuously once installed.

What thermal limit appears first when the 256 GB kit runs at 4800 MT/s under constant load?

The DDR5 RDIMMs have no heat spreader, so the DRAM junction temperature reaches its throttling point before the 1.10 V power envelope becomes a constraint.

How much extra power draw and fan noise should I expect from four 64 GB sticks at 4800 MHz all day?

Each module draws roughly 1.1 V at standard DDR5 current, so the kit adds only modest wattage; registered buffering keeps signal integrity high without increasing acoustic output.

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