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, no heat spreaders, 288 pins, 512GB kit

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 6400 CL52 4Rx4 ECC RDIMM Supermicro X14SDI-36C-SP3F memory upgrade

SKU CH-W261-JAAYX

A 512GB DDR5 ECC Registered RDIMM kit (4×128GB) at 6400 CL52 1.1V, validated for the Supermicro X14SDI-36C-SP3F 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

Size 512GB 4X128GB

  • 512 GB total capacity from four 128 GB modules for maximum memory density
  • DDR5 6400 speed with CL52 latency delivers rated throughput for the platform
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 1 V operation matches the motherboard's memory controller specification exactly
  • 288-pin RDIMM form factor fits the Supermicro X14SDI-36C-SP3F without adapters

Exact-Match Server Upgrade

This 512GB kit contains four 128GB DDR5 6400 RDIMMs built to the exact rank, voltage and timing the Supermicro X14SDI-36C-SP3F motherboard expects. It is intended for administrators who need the full capacity recognised at rated speed without manual tuning.

Registered ECC Architecture

Each module is a 288-pin 4Rx4 registered DIMM operating at 1.1V, so the memory controller is buffered and every slot can be populated. ECC corrects single-bit errors on the fly, preventing silent data corruption in production workloads.

Lifetime Support Included

The kit ships as a matched set of four modules with a lifetime replacement warranty and free US-based technical support. No heat spreaders are fitted, and the package contains only the memory modules themselves.

How it compares

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

Price $17,254.99
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 $33.70 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

Does the 1.1V DDR5 6400 kit hit a thermal limit first under sustained use?

The modules run at 1.1V and have no heat spreader, so sustained loads rely on server chassis airflow to keep temperatures in check.

What noise, heat or power change should I expect with all four 128GB sticks running all day?

Registered DDR5 at 1.1V keeps power draw low per module, but total system heat rises with full population — plan chassis cooling accordingly.

What else must I already own for this 512GB kit to work?

A Supermicro X14SDI-36C-SP3F motherboard with 288-pin DDR5 RDIMM slots and a CPU that supports 4Rx4 registered ECC memory.

More in Model-Specific Memory Upgrades

Similar items