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
Sixteen green DDR5 RDIMM sticks, bare chips, no heat spreaders, in a clear tray

NEMIX RAM

NEMIX RAM 1TB (16x64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-TKN6-EMSZS

1 TB registered DDR5 ECC kit with 16 modules of 64 GB at 4800 MT/s, CL40, 1.1 V, 2Rx4, 288-pin for Supermicro servers

  • Capacity1TB (16 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 1TB total capacity from 16 x 64GB modules
  • DDR5 4800 speed for high-throughput server workloads
  • ECC registered RDIMM design protects data integrity
  • 10V operation reduces power draw per module
  • Validated for Supermicro FatTwin SYS-F521E3-RTB and SYS-F511E2-RT systems

Server memory kit for Supermicro FatTwin

This NEMIX RAM kit delivers 1 TB of DDR5 4800 registered ECC memory across sixteen 64 GB modules. It is built for Supermicro FatTwin SuperServer SYS-F521E3-RTB, SYS-F511E2-RT and X13SEFR-A platforms that require 288-pin RDIMM registered DIMMs. The modules run at 1.10 V with CL40 latency and use major OEM Samsung, Micron or Hynix chips.

Suited for high-density FatTwin deployments

Administrators populating all DIMM slots in the listed FatTwin models will match the validated 2Rx4 rank configuration and registered ECC buffer. Systems needing unbuffered UDIMM modules, lower capacities per slot or non-ECC memory cannot use this kit. Workstations or servers outside the named Supermicro families should verify motherboard qualification before purchase.

Straightforward DIMM installation

Each 288-pin RDIMM seats in the standard DDR5 server slot; no heat spreader is present, so airflow clearance is minimal. The most common issue is mixing registered ECC modules with unbuffered or non-ECC DIMMs, which prevents boot. Follow the Supermicro memory population guide for the specific FatTwin chassis to ensure correct channel balancing.

Highlights

  • 1TB total capacity from 16 x 64GB modules
  • DDR5 4800 speed for high-throughput server workloads
  • ECC registered RDIMM design protects data integrity
  • 10V operation reduces power draw per module
  • Validated for Supermicro FatTwin SYS-F521E3-RTB and SYS-F511E2-RT systems

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K16
Capacity1TB (16 x 64GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemSupermicro
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content1TB (16X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does my Supermicro FatTwin SuperServer SYS-F521E3-RTB or SYS-F511E2-RT have enough DDR5 RDIMM slots for all 16 modules?

This kit contains 16 modules of 64 GB each. Your server must provide 16 free 288-pin DDR5 RDIMM slots to install the full 1 TB kit.

Can I mix these CL40 2Rx4 modules with slower or lower-rank DDR5 RDIMMs already installed?

Mixing CAS latency 40 with different latencies or mixing 2Rx4 ranks with other ranks may prevent the system from training at 4800 MT/s. Matching specifications across all populated slots is recommended.

After installation, how do I verify the kit is running at DDR5 4800 with ECC active?

Enter the BIOS or use a hardware-inventory tool and confirm the memory speed reads 4800 MT/s (PC5-38400), total capacity shows 1 TB, and ECC status reports enabled or active.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.