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Eight bare green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM RS700A-E12-RS4U 1TB (8x128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-M83H-G5XB5 MPN RS700A-E12-RS4U

Eight-module kit delivers 1 TB of registered DDR5 ECC memory at 4800 MT/s for ASUS dual-processor servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB capacity across eight 128GB modules
  • DDR5 4800 speed for high-throughput server workloads
  • ECC registered design protects data integrity
  • 1V operation reduces power draw per module
  • Validated for ASUS RS700A-E12-RS4U 1U dual-processor server

1 TB DDR5 4800 ECC RDIMM kit

This eight-module kit delivers 1 TB of registered DDR5 memory at 4800 MT/s with CL40 latency. It is built for the ASUS RS700A-E12-RS4U dual-processor 1U server and operates at 1.1 V. The 4Rx4 organisation and on-die ECC suit workloads that require data integrity and high capacity per slot.

Sustained load behaviour

Registered buffering and ECC correction maintain signal quality across all twelve channels during continuous operation. The 1.1 V operating voltage limits thermal output inside the dense 1U chassis. Modules use major OEM Samsung, Micron or Hynix chips that are stress-tested under load before shipment.

DDR5 interface limits

The PC5-38400 standard caps transfer rate at 4800 MT/s per pin, so bandwidth scales with populated channels rather than higher clock speeds. Four-rank 4Rx4 modules place greater electrical load on the memory controller, restricting maximum DIMMs per channel compared to dual-rank alternatives. No heat spreaders are fitted, so chassis airflow must handle module cooling.

How it compares

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

Price $29,150.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $29.15 per GB
Pricier than about 82% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K8
Total capacity1 TB (8 × 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 systemsASUS
In the box
Included items1 TB (8 × 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 much heat does the 1.1V 4800MHz DDR5 kit add when the server runs all day?

Each 128GB module operates at 1.1 volts with a CL40 4Rx4 layout, so the eight-stick kit draws low power for its density and produces minimal extra heat in the ASUS RS700A-E12-RS4U chassis.

What must the buyer already own for this 1TB kit to work?

You need an ASUS RS700A-E12-RS4U 1U dual-processor server with eight free 288-pin DDR5 RDIMM slots that support 4Rx4 registered ECC memory at 4800MT/s.

Will the CL40 4Rx4 modules run alongside any older DDR5 RDIMMs I keep in the same server?

Mixing ranks or speeds can prevent the system from posting; the board expects all eight slots filled with identical 4800MHz 4Rx4 registered ECC modules for stable operation.

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