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 with black chips, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM memory upgrade

SKU CH-FWX3-TX2SR

A 512 GB DDR5 registered ECC server memory kit with four 128 GB modules running at 4800 MT/s, CL40 latency and 1.1 V for Thinkmate Supermicro systems

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity across four 128 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design protects data integrity in servers
  • 1 V operation reduces power draw under load
  • Qualified for ThinkMate Supermicro SuperServer 421GE-TNRT platforms

Capacity and Compatibility

This 512GB kit contains four 128GB DDR5 RDIMM modules validated for THINKMATE Supermicro SuperServer 421GE-TNRT and 421GE-TNRT3 systems. It targets administrators who need maximum registered ECC capacity in those specific platforms.

Installation Notes

The 288-pin DDR5 RDIMM form factor fits the designated server DIMM slots and operates at 1.1V with CL40 latency. Registered 4Rx4 modules require the motherboard memory controller to support quad-rank registered DIMMs; verify the server BIOS revision and population rules before installing to avoid POST failures.

Suitability

This kit suits IT teams expanding memory in the listed SuperServer models where 4Rx4 registered ECC DDR5 is qualified. Buyers needing unbuffered UDIMM modules, lower capacities, different speeds, or compatibility with other server brands should look elsewhere.

How it compares

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

Price $16,470.99
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 $32.17 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 lineTHINKMATE Server/Workstation Compatible Series Memory
Model nameTHINKMATE DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K4
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How can I verify the kit is running at DDR5 4800 with CL40 timings after installation?

Check the memory speed and CAS latency in the server BIOS or with a tool such as CPU-Z; they should show 4800 MT/s and CL40 at 1.10 V

What is included in the package and does anything else need to be purchased?

The kit contains four 128 GB 288-pin DDR5 RDIMM modules for a total of 512 GB; no extra parts are required for installation

Which capacity configuration should I choose for the THINKMATE SuperServer 421GE-TNRT?

This part number MR38400-744K4 provides the full 512 GB (4 x 128 GB) registered ECC configuration validated for that server

More in Model-Specific Memory Upgrades

Similar items