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Green printed circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 CL52 2Rx4 1.1V ECC Registered RDIMM Supermicro H14SSL-N memory upgrade

SKU CH-3XG1-EEZNS

128 GB DDR5-6400 ECC registered RDIMM, CL52 1.1 V 2Rx4, validated for Supermicro H14SSL-N motherboards

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB

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  • Exact-match upgrade runs at rated 6400 speed with CL52 timing
  • 128 GB capacity fills one 288-pin RDIMM slot on the H14SSL-N
  • Registered ECC architecture offloads the controller and corrects single-bit errors
  • 2Rx4 rank and 1.10 V spec match the board's memory-population rules
  • Major OEM Samsung Micron Hynix chips deliver enterprise-grade stability

Exact-match DDR5 upgrade for Supermicro H14SSL-N

This 128 GB DDR5-6400 registered ECC RDIMM is built to the precise rank, voltage and timing the Supermicro H14SSL-N motherboard expects. The 2Rx4 organisation and 1.10 V operation let the board recognise the full capacity at rated speed without manual tuning. Buyers using consumer UDIMM or SODIMM modules will find they do not fit the 288-pin registered slots this platform requires.

Sustained-load behaviour with registered ECC

Registered architecture buffers every address and command, so the memory controller stays stable when all channels are fully populated at 6400 MT/s. ECC corrects single-bit errors on the fly, preventing silent data corruption that would otherwise crash production workloads. Systems that omit registered buffering or ECC cannot maintain the same uptime under continuous enterprise demand.

CL52 latency at 1.10 V decides fit

The module runs at CAS latency 52 with a standard 1.10 V supply, matching the board's JEDEC profile exactly. If your configuration requires a different latency or voltage, this DIMM will not meet the memory controller's training parameters. Always verify the motherboard manual for supported DIMM population order before installation.

How it compares

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

Price $4,673.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $36.52 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 numberMR51200-724K1
Total capacity128 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 DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How much heat does this 1.1V DDR5 RDIMM add when the server runs 24/7?

At 1.10V the module draws minimal power, and the registered architecture reduces electrical load on the memory controller, keeping thermal output low even in fully populated configurations.

What motherboard slot and population rules must my Supermicro H14SSL-N already have for this 288-pin RDIMM to work?

The board needs 288-pin DDR5 RDIMM slots and must support 2Rx4 registered ECC modules at 6400 speed; consult the manual for approved population order and maximum capacity per channel.

Can I mix this 2Rx4 CL52 kit with existing DDR5 RDIMMs of different rank or latency in the same H14SSL-N?

Mixing ranks or timings is not recommended; the memory controller will downclock all modules to the slowest common settings, and population rules may prevent full capacity recognition.

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