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
Six bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Server memory upgrade

SKU CH-22BB-MRCC2

Six 128 GB DDR5 modules provide 768 GB of ECC registered memory at 4800 MT/s for SuperMicro Hyper SuperServer systems

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768 GB total capacity across six 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • CL40 latency at 1.1 V operating voltage
  • Validated for SuperMicro Hyper SuperServer SYS-121H-TNR SYS-221H-TNR SYS-221H-TN24R

Capacity and purpose

This kit provides 768GB of DDR5 4800 ECC registered memory across six 128GB modules. It is built for SuperMicro Hyper SuperServer systems that require high-density registered DIMMs with error correction for mission-critical workloads.

Compatibility check

Verify that your SuperMicro SYS-121H-TNR, SYS-221H-TNR or SYS-221H-TN24R platform supports 4Rx4 DDR5 RDIMMs at 1.1V and can address the full 768GB across the available 288-pin slots. Confirm the motherboard BIOS recognises registered ECC modules of this rank configuration before ordering.

Build integration

The modules install directly into the server's DDR5 RDIMM slots without heat spreaders, leaving clearance for standard CPU coolers and chassis airflow. Registered buffering reduces electrical load on the memory controller, freeing signal margin for stable operation across all populated channels.

How it compares

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

Price $23,603.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $30.73 per GB
Pricier than about 88% 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 numberMR38400-744K6
Total capacity768 GB (6 × 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 items768 GB (6 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What does the kit contain and do I need to buy anything extra?

The kit contains six 128 GB DDR5 4800 CL40 ECC registered DIMMs for a total of 768 GB. No extra memory parts are required.

How do I decide between the available capacity options?

This kit is a single 768 GB configuration (6 × 128 GB). Choose it when your SuperMicro server needs the maximum supported memory.

What does the 4800 MT/s rating mean once the modules are installed?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.1 V, delivering the rated bandwidth and error-correction for compatible SuperMicro systems.

More in Model-Specific Memory Upgrades

Similar items