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 in a row

NEMIX RAM

NEMIX RAM 256GB 4X64GB DDR5 6400MHz CL52 1.1V 2Rx4 ECC RDIMM Supermicro H13SST-GC memory upgrade

SKU CH-DSCY-WDAGH

A 256GB DDR5 6400MHz registered ECC RDIMM kit built for the Supermicro H13SST-GC motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Full 256 GB capacity recognised at DDR5 6400 speed
  • Registered ECC design corrects single-bit errors automatically
  • 2Rx4 organisation and 1.1 V voltage match controller expectations
  • 288-pin RDIMM form factor fits Supermicro H13SST-GC slots
  • Four-module kit enables full-channel population without gaps

Exact-match server upgrade

This 256GB kit comprises four 64GB DDR5 RDIMM modules built for the Supermicro H13SST-GC motherboard. Registered ECC architecture and 2Rx4 organisation let the board run fully populated at the rated 6400 MT/s without down-clocking.

Thermals and power at rated speed

Operating at 1.10 V, the modules draw minimal power and run without heat spreaders, relying on the server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, keeping idle temperatures low and fan noise at baseline levels.

Sustained load behaviour

ECC corrects single-bit errors in real time, preventing silent data corruption during long compute runs. Registered signalling maintains clean command integrity across all four slots, so throughput stays consistent at CL52 latency throughout extended workloads.

How it compares

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

Price $8,164.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.89 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 numberMR51200-924K4
Total capacity256 GB (4 × 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules in the Supermicro H13SST-GC, and which slot order is the step people get wrong?

Insert each 64 GB RDIMM into the 288-pin DDR5 slots following the motherboard manual's population sequence; the common mistake is skipping the prescribed slot order, which prevents the 256 GB kit from running at 6400 MHz.

What maintenance or replacement will the 2Rx4 ECC RDIMM kit need over its service life?

No routine maintenance is required; the registered ECC design corrects single-bit errors automatically, and the modules are covered by a lifetime replacement warranty if a hardware fault ever develops.

What limit appears first when the 4×64 GB kit runs sustained workloads at 6400 MHz CL52?

The memory controller's maximum supported capacity and ranked-population rules are the first ceiling; exceeding the approved DIMM-per-channel count or total capacity will throttle speed or prevent boot.

More in Model-Specific Memory Upgrades

Similar items