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Green rectangular DDR5 UDIMM circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 48GB DDR5 4800 PC5-38400 CL40 2Rx8 1.1V 288-pin UDIMM SuperMicro C9Z790-CG memory upgrade

SKU CH-NK68-23XBN

48 GB DDR5 4800 CL40 UDIMM module for SuperMicro C9Z790-CG workstations

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

Capacity 48GB

  • 48 GB capacity expands workstation memory headroom for large datasets
  • DDR5 4800 MT/s transfers data at PC5-38400 bandwidth
  • CL40 CAS latency keeps timing tight for responsive multitasking
  • 1 V operation reduces power draw and heat output
  • 288-pin UDIMM form factor fits SuperMicro C9Z790-CG motherboards

Capacity and purpose

This NEMIX RAM module provides 48GB of DDR5 4800 memory in a single 288-pin UDIMM. It is built for the SuperMicro C9Z790-CG desktop workstation platform where a non-ECC unbuffered DIMM is required.

Fit and alternatives

The stick suits builders upgrading that specific SuperMicro board who need a 1.1V 2Rx8 module without a heat spreader. It is not for systems that demand ECC or registered memory, nor for boards limited to lower densities or different pin counts.

Sustained operation

Rated at CL40 and PC5-38400, the module runs at its standard voltage continuously. All units are stress tested under load before shipping, so stability is maintained during extended workloads rather than only in brief benchmarks.

How it compares

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

Price $569.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 48 GB
Higher than about 55% of the 20,941 comparable items (median 32 GB).
Price per GB $11.87 per GB
Pricier than about 57% 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 Non-ECC Unbuffered UDIMM
Part numberMD38400-4828K1
Total capacity48 GB
Product type288-Pin DDR5 UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items48 GB (1 × 48 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN Non-ECC Unbuffered UDIMM

Other versions of this model

5 more in the same range

Questions about this item

Does this 48 GB DDR5 4800 module require a SuperMicro C9Z790-CG motherboard to operate?

The module is validated for the SuperMicro C9Z790-CG and any board that accepts 288-pin DDR5 UDIMMs at 1.1 V with CL40 timing.

Can the 2Rx8 48 GB stick be installed alongside existing DDR5 DIMMs of different capacity or rank?

Yes, the unbuffered non-ECC design allows mixed-capacity DDR5 populations provided the platform supports the combined rank count and runs all slots at 4800 MT/s CL40.

After installation, how can I confirm the module is running at PC5-38400 CL40 1.1 V?

Check the BIOS memory summary or a tool such as CPU-Z; it should report 4800 MT/s, CL40-40-40 latency, 1.10 V and 2Rx8 organization for the installed DIMM.

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