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 without heat spreaders

NEMIX RAM

NEMIX RAM MR51200-744K4 512GB (4x128GB) DDR5 6400 CL52 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-ZEGY-JE83V

512GB DDR5-6400 ECC registered RDIMM kit (4×128GB) verified for Supermicro X14SDV-36CE-SP3F at CL52 1.1V

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

  • 512 GB total capacity from four 128 GB modules for high-density server workloads
  • DDR5-6400 speed with CL52 latency and 1.1 V operation for efficient data throughput
  • Registered ECC design with 4Rx4 organisation to correct single-bit errors and support full-slot populations
  • 288-pin RDIMM form factor validated for the Supermicro X14SDV-36CE-SP3F motherboard
  • Built with major OEM Samsung Micron Hynix DRAM chips for enterprise-grade reliability

Server-grade capacity upgrade

This 512GB kit delivers four 128GB DDR5 RDIMM modules rated at 6400MT/s with CL52 latency and 1.1V operation. It targets administrators scaling memory on Supermicro X14SDV-36CE-SP3F platforms that require registered ECC memory.

Replaces partial or slower populations

The kit fills all four channels with matched 4Rx4 modules so the memory controller sees a single validated configuration. The jump is worth it when workloads exceed current capacity or when mixed-rank populations force the board to downclock.

Fits registered DIMM slots on qualified boards

Each 288-pin module uses the registered architecture the X14SDV-36CE-SP3F expects, freeing the on-die controller from electrical load. ECC corrects single-bit errors in flight while the 1.1V baseline keeps power draw predictable. Verify the motherboard manual for approved 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 $18,824.99
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 $36.77 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 numberMR51200-744K4
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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB 4 × 128 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 RDIMM modules fit the Supermicro X14SDV-36CE-SP3F motherboard slots?

Yes, the kit uses the 288-pin DDR5 RDIMM form factor required by the X14SDV-36CE-SP3F, so each 128 GB module seats directly in the board's DDR5 DIMM slots.

What is the correct installation order for the four 128 GB sticks on this board?

The Supermicro X14SDV-36CE-SP3F manual defines a specific DIMM population sequence; you must follow that order so all 512 GB are recognised at DDR5-6400 with CL52 timings.

Do these registered ECC modules need any firmware updates or battery replacements over time?

No, the RDIMMs are passive hardware with no firmware or onboard battery; they run at 1.1 V and rely on the motherboard's memory controller for ECC and registered buffering.

More in Model-Specific Memory Upgrades

Similar items