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
Six green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Compatible memory upgrade

SKU CH-FJGX-B3828

Six 128 GB DDR5 4800 CL40 ECC registered DIMMs totalling 768 GB for SuperMicro servers

  • Capacity768GB (6 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 768 GB total capacity from six 128 GB modules
  • DDR5 4800 speed with CL40 latency for responsive server workloads
  • ECC registered design protects data integrity in mission-critical environments
  • 1 V operating voltage reduces power draw under heavy load
  • Validated for SuperMicro SYS-111C-NR, SYS-521C-NR and X13SEDW-F platforms

768GB DDR5 4800 ECC RDIMM kit

This 768GB kit contains six 128GB DDR5 4800 CL40 registered DIMMs built for SuperMicro UP SuperServer SYS-111C-NR and SYS-521C-NR systems. It targets administrators who need maximum registered ECC capacity on the X13SEDW-F platform.

DDR5 4800 registered ECC limits

The modules run at DDR5 4800 (PC5-38400) with a CL40 latency and 1.10V operating voltage. Registered buffering and on-die ECC add command/address parity and single-bit correction, which are mandatory for the qualified SuperMicro servers but increase latency compared to unbuffered memory.

Six-module installation on X13SEDW-F

Populate all six 288-pin slots following the motherboard population guide; the 4Rx4 organisation requires the correct slot order to initialise at 4800 MT/s. Common issues include mixing ranks, skipping the registered DIMM requirement, or using an outdated BIOS that does not recognise the full 768GB capacity.

Highlights

  • 768 GB total capacity from six 128 GB modules
  • DDR5 4800 speed with CL40 latency for responsive server workloads
  • ECC registered design protects data integrity in mission-critical environments
  • 1 V operating voltage reduces power draw under heavy load
  • Validated for SuperMicro SYS-111C-NR, SYS-521C-NR and X13SEDW-F platforms

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K6
Capacity768GB (6 x 128GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemSupermicro
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content768GB (6X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I decide between a 128 GB module and a smaller capacity for my SuperMicro server?

Each module in this kit is 128 GB, giving 768 GB total across six slots; choose this capacity when your workload needs maximum density per DIMM slot.

What does the 4800 MT/s rating mean for actual throughput in a registered DDR5 system?

At DDR5 4800 the modules deliver PC5-38400 bandwidth, so sustained throughput is capped by that 38 400 MB/s ceiling in a compatible SuperMicro platform.

How does the 288-pin RDIMM interface limit memory speed on the X13SEDW-F motherboard?

The 288-pin registered DDR5 form factor locks the kit to 4800 MT/s on the X13SEDW-F, preventing higher speeds even if the CPU controller supports them.

Also in this aisle

People compared these

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