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Six green DDR5 RDIMM modules with black chips, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM DDR5 768GB 6x128GB 4800MHz CL40 ECC RDIMM Supermicro H13SSF memory upgrade

SKU CH-Q4ZA-67A48

Six 128 GB DDR5 registered ECC RDIMMs deliver 768 GB at 4800 MHz CL40 1.1 V for the Supermicro H13SSF

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 6X128GB

Show 30 more
  • 768 GB total capacity from six 128 GB modules for maximum memory density
  • DDR5-4800 speed with CL40 timing delivers rated bandwidth for Supermicro H13SSF
  • Registered ECC architecture with 2Rx4 organisation offloads the controller and corrects single-bit errors
  • 1 V operation matches the board's memory-controller requirements for stable full-population use
  • 288-pin RDIMM form factor is the exact fitment the H13SSF motherboard requires

Exact-match upgrade for Supermicro H13SSF

This 768GB kit delivers six 128GB DDR5 RDIMMs rated at 4800MHz with CL40 latency and 1.1V operation. Registered ECC architecture ensures the memory controller recognises every module at full capacity and rated speed. It is built for servers that require 2Rx4 registered DIMMs and will not accept unbuffered or SO-DIMM alternatives.

Simple slot installation with population rules

Each 288-pin module seats in the standard DDR5 RDIMM slots, but the H13SSF motherboard enforces a specific population order that must be followed. The manual lists approved capacities and slot sequences; skipping a step can leave capacity unseen or prevent the system from posting. No heat spreaders are fitted, so clearance around adjacent components is generous.

Sustained enterprise stability under full load

Registered buffering offloads the memory controller so all six slots run fully populated without signal degradation. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots during continuous operation. The 1.1V DDR5 baseline keeps power draw consistent across extended workloads.

How it compares

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

Price $21,979.99
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 $28.62 per GB
Pricier than about 81% 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 numberMR38400-724K6
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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items768 GB 6 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

How can I confirm the kit is running at 4800MHz with CL40 after installation?

Enter the BIOS or use a tool such as CPU-Z to verify the memory frequency reads 4800MHz and the CAS latency shows CL40; the registered ECC design also lets the server log corrected errors during POST.

What does the 768GB kit contain and is anything else required?

The package includes six 128GB DDR5 288-pin RDIMM modules; no extra cables, brackets or cooling parts are needed for installation.

Which capacity should I choose if my Supermicro H13SSF manual lists 128GB per slot as the maximum?

Select this 768GB kit (six 128GB DIMMs) to fully populate every slot at the board's rated per-slot limit.

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