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Six green DDR5 RDIMM sticks, 288-pin, no heat spreaders, labeled NEMIX RAM

NEMIX RAM

NEMIX RAM 768GB 6x128GB DDR5 4800 CL40 ECC RDIMM Supermicro H14SSL-N memory upgrade

SKU CH-XAPC-KH8EE

A 768GB kit of six 128GB DDR5 4800 CL40 ECC registered RDIMMs built for the Supermicro H14SSL-N motherboard

  • 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 24 more
  • 768 GB total capacity from six 128 GB modules
  • DDR5 4800 speed with CL40 latency for rated performance
  • Registered ECC design corrects single-bit errors on the fly
  • 1 V operation matches the board's memory controller spec
  • 288-pin RDIMM form factor fits the Supermicro H14SSL-N motherboard

768GB DDR5 4800 ECC RDIMM kit

This 768GB kit contains six 128GB DDR5 4800 Registered ECC RDIMMs built for the Supermicro H14SSL-N motherboard. It targets administrators who need maximum memory capacity in every slot for virtualisation, databases or high-performance computing workloads. Each module runs at 1.1V with CL40 timing and a 2Rx4 organisation. The registered design lets the board run fully populated at rated speed.

Upgrading from smaller RDIMM sets

Replacing a partial kit with this six-module set fills every supported slot so the memory controller operates at full bandwidth without mixing ranks or speeds. The jump is worth it when your workloads exceed the current capacity limit or when mixed-rank configurations force the board to down-clock. Systems that already run a full complement of matched 128GB RDIMMs at DDR5 4800 will not gain additional throughput.

Tool-free DIMM installation

Installation follows the board's documented population order: open the ejector tabs, align the 288-pin key notch, press straight down until both tabs click, then verify the POST memory count. The most common issue is seating a module slightly off-centre, which leaves the tabs unlatched and causes a boot failure or reduced capacity. Always power down, disconnect mains cables and observe anti-static precautions before handling the RDIMMs.

How it compares

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

Price $24,789.99
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 $32.28 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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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

Will these 288-pin RDIMMs fit the memory slots on my Supermicro H14SSL-N motherboard?

Yes — the kit uses the 288-pin DDR5 RDIMM form factor that the H14SSL-N requires, not UDIMM or SODIMM.

What is the correct population order when installing all six 128 GB modules on the H14SSL-N?

Follow the motherboard manual's approved DIMM population sequence; the board's memory-controller rules dictate which slots must be filled first for full 768 GB operation.

Do the modules need any ongoing maintenance such as firmware updates or thermal-pad replacement?

No — the RDIMMs have no heat spreader and no user-serviceable firmware; ECC error correction runs automatically in hardware.

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