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
Two green DDR5 RDIMM sticks with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 6400 CL52 2Rx4 ECC Registered RDIMM memory upgrade for Supermicro X14SDW-64C-SP9F

SKU CH-RTJB-7M765

64 GB dual-channel DDR5-6400 kit with CL52, 1.1 V, 2Rx4 registered ECC RDIMMs validated for the Supermicro X14SDW-64C-SP9F

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB 2X32GB

Show 4 more
  • 64 GB capacity from two 32 GB modules enables large workloads
  • DDR5-6400 speed with CL52 latency delivers rated throughput
  • Registered ECC design corrects single-bit errors for data integrity
  • 2Rx4 organisation at 1.1 V matches controller expectations
  • 288-pin RDIMM form factor fits Supermicro X14SDW-64C-SP9F memory slots

Exact-fit 64 GB DDR5 ECC RDIMM kit

This 64 GB kit contains two 32 GB DDR5-6400 (PC5-51200) registered ECC modules built to the exact rank, voltage and timing the Supermicro X14SDW-64C-SP9F motherboard expects. The 2Rx4 organisation and 1.1 V operation let the board recognise full capacity and run at rated speed without manual tuning. It is not suited for systems that require unbuffered UDIMMs or SODIMM form factors.

Thermals and power at standard voltage

Operating at the specified 1.1 V, the modules draw minimal power and run without a heat spreader, relying on normal chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, keeping power draw predictable during typical server workloads. No active cooling or special airflow arrangements are mandated by the design.

Behaviour under sustained load

The registered architecture offloads the memory controller so every populated slot remains stable at full capacity during extended operation. On-die ECC detects and corrects single-bit errors in real time, preventing silent data corruption that could otherwise cause unplanned reboots. CL52 latency stays consistent throughout long-running tasks because the modules operate within their validated voltage and timing envelope.

How it compares

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

Price $2,320.99
Pricier than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $36.27 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 numberMR51200-324K2
Total capacity64 GB (2 × 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB 2 × 32 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 288-pin DDR5 RDIMM kit in my Supermicro X14SDW-64C-SP9F and what step is often missed?

Power down, open the chassis, and insert each 32GB module into the slots specified by the motherboard manual following the exact population order; the step most often missed is checking that the registered ECC DIMMs are seated in the correct sequence so the memory controller initialises all 64GB at DDR5-6400.

What maintenance or replacement will this 2Rx4 registered ECC memory need over its service life?

The modules have no moving parts and no heat spreader, so no routine maintenance is required; if a single-bit error exceeds ECC correction capability the affected DIMM should be replaced, otherwise the kit is designed to run for the lifetime of the server.

What limit appears first when the 64GB kit runs sustained workloads at 6400 MT/s and 1.10 V?

The registered buffer and ECC logic keep signal integrity stable at the rated CL52 timing, so the first practical limit is the motherboard's maximum supported capacity and slot population rules rather than the memory modules themselves.

More in Model-Specific Memory Upgrades

Similar items