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

NEMIX RAM

NEMIX RAM 128GB 4x32GB DDR5 6400MHz CL52 1.1V 2Rx8 ECC Registered RDIMM Kit for Supermicro H13SST-GC

SKU CH-6XHK-7AEZC

A 128 GB DDR5 kit of four 32 GB registered ECC RDIMMs running at 6400 MHz with CL52 latency and 1.1 V operation, validated for the Supermicro H13SST-GC motherboard

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB total capacity from four 32 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • Registered ECC RDIMM architecture for error correction and signal integrity
  • 2Rx8 dual-rank organisation optimised for full population
  • Verified compatible with Supermicro H13SST-GC motherboard

Exact-fit DDR5 RDIMM kit

This 128GB kit contains four 32GB DDR5-6400 Registered ECC modules rated at CL52 and 1.10V. The 2Rx8 organization and 288-pin RDIMM form factor match the Supermicro H13SST-GC motherboard's requirements so the system recognises the full capacity at rated speed.

Suited for full-population server builds

Administrators populating every slot on the H13SST-GC with Registered ECC memory will get the stability the platform expects. Buyers needing unbuffered UDIMMs, SODIMMs, non-ECC modules or a different voltage or rank structure should look elsewhere.

Sustained-load behaviour

Registered buffering reduces electrical load on the memory controller so all four modules remain stable at DDR5-6400 under continuous throughput. ECC corrects single-bit errors on the fly preventing silent data corruption during long-running workloads.

How it compares

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

Price $4,804.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $37.54 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 numberMR51200-328K4
Total capacity128 GB (4 × 32 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Which motherboard slot type must my Supermicro H13SST-GC have to accept this 288-pin DDR5 RDIMM kit?

The board needs 288-pin DDR5 RDIMM slots; this kit will not fit UDIMM or SODIMM sockets.

Can I mix these 2Rx8 registered ECC modules with unbuffered non-ECC DIMMs already installed in the server?

No, registered and unbuffered DIMMs cannot be mixed; the memory controller requires all slots to use the same registered ECC type.

How do I verify the kit runs at DDR5 6400 CL52 1.10V after installation?

Enter the BIOS or use a hardware monitor to confirm the memory reports 6400 MT/s, CL52 timings and 1.10 V across all four 32 GB modules.

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