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Six green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5-6400 ECC Registered RDIMM CL52 1.1V Supermicro H13SSW memory upgrade

SKU CH-JQB3-VXCTY

Six 128 GB DDR5 RDIMMs deliver 768 GB of registered ECC memory at 6400 MT/s and CL52 for the Supermicro H13SSW motherboard

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 768 GB total capacity from six 128 GB modules for maximum server density
  • DDR5-6400 speed with CL52 latency delivers rated bandwidth for demanding workloads
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 1 V operation matches the motherboard's memory controller specification exactly
  • 288-pin RDIMM form factor verified for Supermicro H13SSW compatibility

Exact-fit 768 GB DDR5 kit

This NEMIX RAM kit delivers 768 GB across six 128 GB DDR5-6400 Registered ECC RDIMMs. It is built for the Supermicro H13SSW motherboard and matches the board’s required rank, voltage and timing so the memory controller recognises the full capacity at rated speed.

Suits fully populated H13SSW builds

Ideal for administrators filling every slot on a Supermicro H13SSW server where registered ECC memory is mandatory. Not for systems that only accept unbuffered UDIMMs or SODIMMs, or for platforms that cannot address 128 GB per module.

Straightforward 288-pin installation

Modules slot into the 288-pin RDIMM sockets following the motherboard’s population order. Common issues arise when the population sequence is ignored or when the BIOS is not updated to support the full 768 GB configuration.

How it compares

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

Price $27,969.99
Pricier than about 93% 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 $36.42 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 numberMR51200-724K6
Total capacity768 GB (6 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
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 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does this kit require a Supermicro H13SSW motherboard with 288-pin DDR5 RDIMM slots to work?

Yes, the 768 GB kit contains six 128 GB DDR5-6400 registered ECC RDIMMs built for the 288-pin slots on a Supermicro H13SSW motherboard; the board must support registered memory and the rated 1.1 V operation.

Can I mix these 2Rx4 CL52 modules with older DDR5 RDIMMs that have different ranks or latencies?

Mixing ranks or CAS latencies is not recommended; the motherboard will typically clock all channels to the slowest common timing, so population rules in the H13SSW manual should be followed for full 768 GB capacity at 6400 MT/s.

How can I confirm the kit is running at 6400 MT/s with ECC active after installation?

Enter the BIOS or use a hardware-info utility to verify the memory frequency shows 6400 MT/s, the voltage reads 1.1 V, and ECC status reports enabled and functional across all six DIMMs.

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