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
Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 768GB 12x64GB Supermicro H14SSF memory upgrade

SKU CH-PC6T-M7XWB

A 768 GB DDR5 4800 ECC registered RDIMM kit of twelve 64 GB modules, validated for the Supermicro H14SSF motherboard

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 12X64GB

Show 24 more
  • 768 GB total capacity across 12 matched 64 GB modules
  • DDR5 4800 MT/s speed with CL40 latency for rated server performance
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 10 V operation at 2Rx4 rank exactly matches Supermicro H14SSF memory-controller requirements
  • 288-pin RDIMM form factor ensures correct physical and electrical fit in the target motherboard

Supermicro H14SSF DDR5 RDIMM kit

This 768GB kit contains twelve 64GB DDR5 4800 registered ECC modules built to the exact rank, voltage and timing the Supermicro H14SSF memory controller expects. The 288-pin RDIMM form factor matches the board's DIMM slots and population rules so the full capacity is recognised at rated speed.

Suited for fully populated H14SSF servers

Registered ECC architecture offloads the memory controller and corrects single-bit errors on the fly, keeping production workloads stable when every slot is filled. Builders using consumer UDIMMs, non-ECC modules or a different DDR generation cannot use this kit because the pinout, voltage and signalling are incompatible.

Straightforward slot installation

Modules seat in the standard 288-pin DDR5 RDIMM slots with the key notch aligned; no heat spreader means clearance is not a concern. The most common issue is ignoring the motherboard manual's required population order, which can prevent the system from posting or recognising the full 768GB capacity.

How it compares

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

Price $20,989.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $27.33 per GB
Pricier than about 76% 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 numberMR38400-924K12
Total capacity768 GB (12 × 64 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 12 × 64 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Questions about this item

Does this 12-module 288-pin RDIMM kit require a Supermicro H14SSF motherboard to operate?

Yes, the kit is validated for the Supermicro H14SSF motherboard and its 288-pin registered DIMM slots; other boards may not support the 2Rx4 rank layout or population rules.

Can I mix these 64GB 2Rx4 DDR5-4800 CL40 modules with existing DDR5 RDIMMs of a different capacity or rank?

Mixing different capacities or ranks is not recommended; the H14SSF memory controller expects uniform 2Rx4 modules across all populated channels to run at the rated 4800 MT/s with CL40 timing.

How do I confirm the full 768GB is recognised and running at DDR5-4800 CL40 after installation?

Check the BIOS memory information screen or the OS memory report — both should show 768GB total, 12 modules detected, speed at 4800 MT/s and CAS latency at CL40.

More in Model-Specific Memory Upgrades

Similar items