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
Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 ECC RDIMM FatTwin SYS-F521E3-RTB SYS-F511E2-RT X13SEFR-A memory upgrade

SKU CH-YM56-BDHRY

DDR5 4800 ECC RDIMM kit adds 128 GB in two 64 GB modules for SuperMicro FatTwin SYS-F521E3-RTB, SYS-F511E2-RT and X13SEFR-A servers

  • Capacity128GB (2 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128GB kit expands server capacity for heavy workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design protects data integrity in mission-critical systems
  • 10V operation reduces power draw per module
  • Validated for SuperMicro FatTwin SYS-F521E3-RTB and SYS-F511E2-RT

128GB DDR5 4800 ECC RDIMM Kit

This 128GB kit contains two 64GB DDR5 4800 ECC RDIMM modules built for SuperMicro FatTwin SuperServer systems. It targets administrators who need registered, error-correcting memory for SYS-F521E3-RTB, SYS-F511E2-RT or X13SEFR-A platforms.

DDR5 4800 Registered Limits

DDR5 4800 (PC5-38400) operates at 1.10V with CL40 latency and a 2Rx4 organisation across 288 pins. Registered buffering and ECC are mandatory for these servers; unbuffered or non-ECC modules will not function.

Upgrade From Lower Capacity or Speed

Replacing smaller DDR5 kits or slower registered memory adds capacity for virtualisation density and bandwidth for memory-bound workloads. The jump is worthwhile when current slots are filled or when workloads exceed the throughput of lower-speed registered DIMMs.

Highlights

  • 128GB kit expands server capacity for heavy workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design protects data integrity in mission-critical systems
  • 10V operation reduces power draw per module
  • Validated for SuperMicro FatTwin SYS-F521E3-RTB and SYS-F511E2-RT

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K2
Capacity128GB (2 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 Content128GB (2X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I choose the 128GB kit or a single 64GB module for my SuperMicro FatTwin?

The 128GB kit provides two matched 64GB modules for dual-channel operation. A single module would halve capacity and bandwidth.

What does the DDR5 4800 rating deliver in a real SuperServer SYS-F521E3-RTB?

It runs at 4800 MT/s with CL40 latency at 1.1V, giving the maximum standard bandwidth the platform supports without overclocking.

How does the 288-pin RDIMM interface limit usable speed in this server?

The registered 288-pin DDR5 slot caps operation at the JEDEC 4800 MT/s spec; faster modules will downclock to this rate.

Also in this aisle

People compared these

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