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 modules with black chips no heat spreader

NEMIX RAM

NEMIX RAM 128GB 2x64GB DDR5 6400 CL52 4Rx4 ECC RDIMM Supermicro X14SDV-36C-SP3F memory upgrade

SKU CH-AKDJ-4K9CQ

128 GB DDR5-6400 ECC RDIMM kit (2 × 64 GB, CL52, 1.1 V, 4Rx4) validated for the Supermicro X14SDV-36C-SP3F motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

  • 128 GB capacity in a 2×64 GB kit for full server density
  • DDR5 6400 speed with CL52 latency runs at rated performance
  • 4Rx4 registered ECC design corrects single-bit errors on the fly
  • 1 V operation matches the motherboard's memory controller spec
  • Validated for Supermicro X14SDV-36C-SP3F with 288-pin RDIMM form factor

Exact DDR5 upgrade kit for Supermicro

This 128GB kit contains two 64GB DDR5 6400 RDIMMs built to the board's required 4Rx4 registered ECC specification. It runs at 1.10V with CL52 latency and uses the 288-pin form factor the server expects. System administrators managing memory-critical workloads on this platform receive the precise rank, voltage and timing the controller validates at full capacity.

Replaces lower-capacity

The jump is worth it when your workload needs the full 128GB across two slots and the memory controller must see registered ECC modules at the rated 6400 speed. Registered architecture offloads the controller so every populated slot operates at spec, while ECC corrects single-bit errors before they cause silent data corruption or unplanned reboots in production environments.

Verify your Supermicro X14SDV-36C-SP3F manual

Confirm the approved DIMM population order, maximum supported capacity per slot and any BIOS version requirements for 4Rx4 registered modules. The board requires 288-pin RDIMMs — not UDIMMs or SODIMMs — and population rules vary by configuration. Consult the system documentation for supported capacities and installation steps to ensure the kit is recognised at full speed.

How it compares

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

Price $4,037.99
Pricier than about 77% 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 $31.55 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 numberMR51200-944K2
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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the Supermicro X14SDV-36C-SP3F motherboard?

Yes, this 2x64GB kit uses the exact 288-pin RDIMM form factor and DDR5 6400 specification that the X14SDV-36C-SP3F requires, so each module seats correctly in the board's DIMM slots.

What is the correct population order when installing both 64GB modules on this board?

Install the first module in the slot designated as DIMM 1A (or the primary slot per the manual), then the second in the matching channel slot; the board's memory-population rules must be followed for full 128GB recognition.

Do these 4Rx4 Registered ECC modules require any firmware updates or ongoing maintenance after installation?

No scheduled maintenance is needed; the modules run at 1.1V with on-die ECC correction, and stability is maintained through the board's memory controller without further intervention.

More in Model-Specific Memory Upgrades

Similar items