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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 6400 ECC RDIMM 128GB 2x64GB CL52 1.1V 2Rx4 Supermicro H13SVW-N memory upgrade

SKU CH-NKKT-22D45

128 GB DDR5 6400 ECC registered RDIMM kit (2 × 64 GB, CL52, 1.1 V, 2Rx4) validated for Supermicro H13SVW-N motherboards

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB total capacity from a matched 2 × 64 GB kit
  • DDR5-6400 speed with CL52 latency for high-throughput server workloads
  • Registered ECC architecture corrects single-bit errors and supports full population
  • 1 V operating voltage matches the Supermicro H13SVW-N memory controller spec
  • 288-pin RDIMM form factor ensures correct physical and electrical fit

Exact-match upgrade for Supermicro H13SVW-N

This 128GB kit contains two 64GB DDR5 6400 RDIMM modules built to the CL52 1.1V 2Rx4 specification the board expects. Registered ECC architecture ensures every slot runs fully populated at rated speed without manual tuning. The kit is validated for the H13SVW-N motherboard so the memory controller recognises the full capacity immediately.

Sustained enterprise workload behaviour

Registered buffering offloads the memory controller during continuous multi-threaded tasks, keeping latency stable across all populated channels. ECC corrects single-bit errors on the fly, preventing silent data corruption that would otherwise halt production jobs. The 1.1V operating point reduces thermal pressure during extended runs at full capacity.

Replaces partial or slower memory configurations

This kit upgrades systems currently running below the 128GB maximum or at lower DDR5 speeds, delivering the full bandwidth the platform supports. It is not for boards that accept only UDIMM or SODIMM form factors, nor for builds that require a heat spreader on every module.

How it compares

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

Price $4,405.99
Pricier than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $34.42 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 numberMR51200-924K2
Total capacity128 GB (2 × 64 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 items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How much heat does the 1.10V DDR5-6400 kit add when the server runs all day?

The modules run at 1.10 V with no heat spreader, so they rely on the chassis airflow that the Supermicro H13SVW-N already provides; registered buffering reduces electrical load on the memory controller, keeping thermals comparable to other DDR5 RDIMMs at this voltage.

What must the motherboard provide for these 2Rx4 RDIMMs to be recognised at full capacity?

The Supermicro H13SVW-N must support 288-pin DDR5 RDIMM slots, registered ECC operation, 2Rx4 rank organisation, and DDR5-6400 speed at 1.10 V; the board’s memory-population rules then determine which slots to populate first.

Can I mix this DDR5-6400 CL52 kit with slower DDR5 RDIMMs already installed in the H13SVW-N?

All populated slots will run at the speed, voltage, and timings of the slowest module, so adding CL52 DDR5-6400 DIMMs alongside slower DDR5 RDIMMs forces the faster kit to down-clock and loosen latency to match.

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