We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR5 RDIMM modules with black chips, no heat spreader, 288 pins

NEMIX RAM

NEMIX RAM MR51200-724K4 512GB 4x128GB DDR5 6400 CL52 1.1V ECC RDIMM memory upgrade

SKU CH-9H4R-YNQCN

512 GB kit of four 128 GB DDR5 6400 CL52 1.1 V ECC registered RDIMM modules built for the Supermicro H13SSL-N motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 512 GB total capacity from four 128 GB modules
  • DDR5 6400 speed with CL52 latency for rated throughput
  • 1 V operation matching server memory controller requirements
  • ECC and registered design corrects errors and buffers signals
  • Verified fit for Supermicro H13SSL-N motherboard

Server-grade DDR5 kit

This 512 GB kit delivers four 128 GB DDR5 6400 modules built as 2Rx4 registered ECC RDIMMs. It targets administrators who need maximum supported capacity on a single Supermicro H13SSL-N motherboard.

Build integration

The 288-pin registered form factor matches the board's required slot type and population rules. Registered buffering lets every channel run fully populated at rated speed while ECC corrects single-bit errors before they affect workloads.

Thermals and power

Modules operate at 1.1 V without heat spreaders, relying on chassis airflow for cooling. Low voltage and registered architecture keep power draw predictable in dense server configurations.

How it compares

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

Price $18,049.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $35.25 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 numberMR51200-724K4
Total capacity512 GB (4 × 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 items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the 1.10V operating voltage stay stable when all four 128GB modules run at DDR5-6400 continuously?

The kit is specified at 1.10V for DDR5-6400 operation; registered ECC RDIMMs are designed to maintain that voltage across full population under sustained load.

How much heat do the four 128GB RDIMMs generate and will they need extra airflow in a Supermicro H13SSL-N running 24/7?

These modules have no heat spreader and run at 1.10V; registered DDR5 RDIMMs typically stay within standard thermal limits in a server chassis with normal front-to-back airflow.

Which motherboard slots and BIOS settings are required so the Supermicro H13SSL-N recognises the full 512GB kit at 6400MT/s?

The H13SSL-N requires 288-pin DDR5 RDIMMs; populate all four slots per the board's population guide and enable the DDR5-6400 profile in BIOS to run at rated speed.

More in Model-Specific Memory Upgrades

Similar items