We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green 288-pin DDR5 RDIMM modules, no heat spreaders, 128GB each

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM for SuperServer X13SEM-F X13SEM-TF memory upgrade

SKU CH-AV96-DTTN2

256GB DDR5 4800 ECC RDIMM kit with two 128GB registered modules for SuperMicro X13SEM servers

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design detects and corrects data errors
  • 4Rx4 quad-rank organisation maximises density per slot
  • 1 V operation reduces power draw under load

Capacity and Configuration

This NEMIX RAM kit delivers 256GB of DDR5 memory across two 128GB modules. It is built for SuperMicro SuperServer X13SEM-F and X13SEM-TF systems that require registered ECC RDIMMs for stable operation under sustained enterprise workloads.

Suitable Systems and Limitations

The modules suit administrators upgrading compatible SuperMicro 211E series servers where 4Rx4 organisation and CL40 timing at 4800 MT/s are validated. Builders needing unbuffered DIMMs, lower latency ratings, or capacities beyond this 256GB kit should evaluate alternative memory configurations.

Included Components and Effect

The package supplies two 288-pin RDIMMs pre-tested for compatibility with the target platforms. No heat spreaders are fitted, so airflow within the server chassis manages thermal performance, and no additional software or accessories are bundled.

How it compares

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

Price $8,126.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.75 per GB
Pricier than about 90% 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 numberMR38400-744K2
Total capacity256 GB (2 × 128 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 items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does this DDR5 4800 kit require a SuperMicro X13SEM motherboard with DDR5 slots to operate?

Yes, the modules are 288-pin DDR5 RDIMMs and the product is validated for SuperServer X13SEM-F and X13SEM-TF platforms that provide DDR5 memory sockets.

Will this 4Rx4 DDR5 4800 kit run at its rated speed if installed alongside slower DDR5 modules already in the system?

The memory controller will typically clock all installed DIMMs to the lowest common speed, so mixing with slower DDR5 modules will reduce this kit to that lower frequency.

How can I confirm the system recognises the full 256 GB capacity and ECC function after installing the two 128 GB modules?

Enter the BIOS or UEFI on the SuperServer and verify the total memory shows 256 GB, the speed reads 4800 MT/s, and ECC is reported as enabled or active.

More in Model-Specific Memory Upgrades

Similar items