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 sticks with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 PC5-38400 CL40 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-M9S9-SRJKC

A 768 GB DDR5 4800 registered ECC kit of six 128 GB modules at CL40 and 1.1 V for SuperMicro IOT SuperServer SYS-221HE systems

  • Capacity768GB (6 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 768 GB total capacity for memory-intensive server workloads
  • DDR5 4800 speed with CL40 latency for responsive data access
  • ECC registered design detects and corrects single-bit errors automatically
  • 1 V operating voltage reduces power draw per module
  • Validated for SuperMicro SuperServer SYS-221HE series compatibility

768 GB DDR5 kit for Supermicro servers

This six-module kit delivers 768 GB of DDR5 4800 registered ECC memory for compatible Supermicro platforms. Each 128 GB module operates at 1.1 V with CL40 latency and a 4Rx4 organisation. The kit targets administrators who need maximum capacity in supported SuperServer systems.

288-pin RDIMM modules require registered ECC slots

Modules fit 288-pin DDR5 RDIMM sockets on qualified Supermicro motherboards such as the SYS-221HE-FTNR, SYS-221HE-FTNRD and SYS-221HE-TNR. Registered signalling and on-die ECC reduce electrical load on the memory controller, freeing electrical headroom for full population. Builders must verify the platform supports 4Rx4 densities before installation.

Sustained throughput with ECC integrity

Registered buffering and error-correcting code maintain data integrity during continuous server workloads. The 4800 MT/s data rate and 1.1 V operation keep power draw stable across all six modules under prolonged load. Systems without registered ECC support or 4Rx4 compatibility cannot use this kit.

Highlights

  • 768 GB total capacity for memory-intensive server workloads
  • DDR5 4800 speed with CL40 latency for responsive data access
  • ECC registered design detects and corrects single-bit errors automatically
  • 1 V operating voltage reduces power draw per module
  • Validated for SuperMicro SuperServer SYS-221HE series compatibility

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

Does the CL40 latency become a bottleneck during sustained server workloads?

CL40 is the rated CAS latency at DDR5 4800 speed; the registered design and ECC maintain signal integrity and data accuracy under continuous load.

How much heat and power does the 768GB kit produce when running all day?

Each 128GB module operates at 1.1V without a heat spreader; the registered DDR5 RDIMM design keeps power draw and thermals within standard server DIMM limits.

Which motherboard slot layout is required for the 6x128GB 288-pin RDIMM kit?

The kit needs six DDR5 RDIMM slots on a Supermicro IOT SuperServer SYS-221HE-FTNR, SYS-221HE-FTNRD or SYS-221HE-TNR platform.

Also in this aisle

People compared these

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