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

NEMIX RAM

NEMIX RAM 768GB 12x64GB DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM Supermicro H13SSL-NT

SKU CH-W72K-N1RZH

A 768GB DDR5 ECC registered DIMM kit with twelve 64GB modules running at 6400MHz CL52 1.1V for Supermicro H13SSL-NT servers

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 768 GB total capacity with twelve 64 GB modules for maximum server density
  • DDR5 6400 speed at CL52 latency delivers rated throughput without downclocking
  • Registered ECC design corrects single-bit errors and stabilises every populated slot
  • 10 V operation matches the motherboard's memory controller specification exactly
  • 288-pin RDIMM form factor fits the Supermicro H13SSL-NT memory population rules

Exact-match 768GB DDR5-6400 kit

This NEMIX RAM kit delivers 768GB through twelve 64GB DDR5 RDIMMs rated at 6400 MT/s (PC5-51200) with CL52 latency and 1.1V operation. Registered ECC architecture with 2Rx4 organization matches the Supermicro H13SSL-NT memory controller expectations for full-capacity recognition at rated speed.

Registered ECC with 2Rx4 rank structure

Registered buffering offloads the memory controller so all twelve slots run fully populated at 6400 MT/s while ECC corrects single-bit errors on the fly. The precise 1.1V voltage, CL52 timing and 2Rx4 rank layout are the exact parameters the board's population rules require.

Suited for Supermicro H13SSL-NT memory expansion

Ideal for administrators populating every DIMM slot on this specific motherboard with validated DDR5 RDIMMs. Not suited for systems requiring UDIMM or SODIMM form factors, non-ECC memory, lower capacities, or boards with different population rules or voltage requirements.

How it compares

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

Price $26,437.99
Pricier than about 92% 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 $34.42 per GB
Pricier than about 90% 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 numberMR51200-924K12
Total capacity768 GB (12 × 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 items768 GB 12 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will any of the 12 DDR5 modules need replacement if a single-bit error occurs during operation?

No, the built-in ECC corrects single-bit errors on the fly so the modules continue running without replacement.

What limits sustained throughput when all 12 slots are populated at DDR5-6400?

The registered buffer and CL52 latency set the timing ceiling once every channel is fully loaded.

How much heat does the 768 GB kit produce at 1.1 V with no heat spreaders during all-day use?

Running at 1.1 V without spreaders keeps thermals low, so standard server airflow is sufficient for continuous operation.

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