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Green printed circuit board with black memory chips and gold edge connectors, no heat spreader

NEMIX RAM

NEMIX RAM 48GB DDR5 4800 PC5-38400 2Rx8 CL40 1.1V ECC RDIMM Supermicro H13SSW memory upgrade

SKU CH-SJ6W-E89SE

48 GB DDR5 4800 ECC registered RDIMM, 2Rx8 CL40 at 1.1 V, 288-pin, validated for Supermicro H13SSW

  • Total capacity48 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 48GB

Show 24 more
  • 48 GB capacity expands server memory headroom for demanding workloads
  • DDR5 4800 speed delivers rated bandwidth without down-clocking
  • ECC and registered design corrects single-bit errors and stabilises fully populated slots
  • 1 V operation matches the platform's voltage requirement for reliable initialisation
  • 288-pin RDIMM form factor fits the Supermicro H13SSW motherboard exactly

48GB DDR5 RDIMM for Supermicro H13SSW

This 48GB DDR5 4800 PC5-38400 module is a registered ECC RDIMM built for the Supermicro H13SSW motherboard. It operates at 1.1V with CL40 latency and a 2Rx8 rank structure. The 288-pin form factor matches the board's DIMM slots exactly. System administrators upgrading compatible Supermicro servers use this memory to expand capacity with assured fitment.

Suits servers needing registered ECC at 4800 MT/s

This module suits environments that require registered ECC DDR5 at the native 4800 speed with 1.1V operation. It is not for systems that accept only unbuffered UDIMMs or SODIMM form factors. Builders needing speeds above 4800 or lower CAS latencies should look elsewhere. Workstations without ECC support in the memory controller will not benefit from the error-correction feature.

2Rx8 rank and 1.1V define compatibility

The single specification that decides fitment is the 2Rx8 registered rank combined with 1.1V DDR5 signalling. The Supermicro H13SSW memory controller expects this exact rank structure and voltage to initialise the DIMM at full capacity and rated speed. A different rank count or voltage will prevent the server from posting or force reduced performance. Verify the motherboard manual for approved population rules before installation.

How it compares

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

Price $1,004.99
Pricier than about 61% of the 21,161 comparable items (median $397.99).
Total capacity 48 GB
Higher than about 55% of the 20,941 comparable items (median 32 GB).
Price per GB $20.94 per GB
Pricier than about 66% 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-4828K1
Total capacity48 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
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items48 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 2Rx8 registered DIMM need any firmware updates or module replacements during its service life?

Registered ECC RDIMMs like this 48 GB DDR5 4800 module are solid-state with no moving parts or firmware; they run until a rare cell failure triggers ECC correction, at which point the module is simply replaced.

What limit appears first when the Supermicro H13SSW runs this 1.1 V DDR5 kit at full load continuously?

The memory controller’s thermal and power envelope is reached before the DIMM’s own 1.10 V rating, so sustained throughput is capped by the platform’s cooling and population rules rather than the module itself.

How much noise and heat does this 288-pin RDIMM add when the server runs all day?

The module has no heat spreader or fan; it draws 1.1 V at DDR5 4800 and relies on the chassis airflow, so it contributes negligible acoustic noise and only modest heat to the system’s overall thermal load.

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