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Two green DDR5 RDIMM modules with gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM 32GB (2×16GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Server memory upgrade

SKU CH-ZA69-TQJ5F

DDR5 4800 ECC registered DIMM kit adds 32 GB to compatible SuperMicro servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC registered design protects data integrity in mission-critical workloads
  • DDR5 4800 speed delivers high bandwidth for demanding server applications
  • 32GB dual-rank kit expands memory capacity for virtualisation and databases
  • 1V operation reduces power draw in dense SuperMicro deployments
  • 288-pin RDIMM form factor ensures direct compatibility with listed SuperMicro Hyper SuperServer systems

SuperMicro DDR5 4800 ECC RDIMM Kit

This 32 GB kit contains two 16 GB DDR5 4800 registered DIMMs with ECC and a CL40 latency. It targets administrators upgrading SuperMicro Hyper SuperServer models SYS-121H-TNR, SYS-221H-TNR and SYS-221H-TN24R where registered error-correcting memory is required.

Installation notes for registered DIMMs

Modules are 288-pin DDR5 RDIMMs that seat in standard server DIMM slots; no heat spreader is fitted, so clearance is minimal. The usual issue is mixing registered and unbuffered DIMMs or populating slots in an order the motherboard manual forbids, which prevents the system from posting.

Pre-order checklist for SuperMicro servers

Verify that each target server lists DDR5 4800 RDIMM support and that the BIOS revision recognises 1Rx8 registered modules at 1.10 V. Confirm the maximum module capacity per slot and the total number of populated channels the board allows before adding this kit.

How it compares

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

Price $890.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $27.84 per GB
Pricier than about 78% 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 numberMR38400-618K2
Total capacity32 GB (2 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items32 GB (2 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How can I verify the kit is running at DDR5 4800 CL40 after installation?

Check the BIOS memory information screen or a system utility such as CPU-Z; both should report 4800 MT/s speed and CAS latency 40 for each 16 GB module.

What comes in the box and is anything else required for a SuperMicro Hyper SuperServer SYS-121H-TNR or SYS-221H-TNR?

The kit includes two 16 GB DDR5 4800 ECC RDIMM modules; no extra parts are needed for the listed SuperMicro systems.

Which capacity kit should I choose if my SuperMicro server has 24 DIMM slots and I want to populate half of them?

A 32 GB kit (2 × 16 GB) fills two slots; twelve such kits would occupy 24 slots for a total of 384 GB.

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