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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 1TB (8x128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-SDXN-8Q0VJ MPN RS700A-E12-RS12U

1 TB DDR5-4800 ECC registered server memory kit with eight 128 GB modules, CL40, 1.10 V, 288-pin RDIMM, validated for ASUS RS700A-E12-RS12U

  • 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 8 modules expands server memory headroom
  • DDR5 4800 speed with CL40 latency supports high-throughput workloads
  • ECC registered design detects and corrects data errors automatically
  • 1V operating voltage reduces power draw per module
  • Validated for ASUS RS700A-E12-RS12U 1U dual-processor servers

Targeted Server Memory Upgrade

This 1TB kit contains eight 128GB DDR5 RDIMM modules built for the ASUS RS700A-E12-RS12U 1U dual-processor server. It delivers registered ECC operation at 4800 MT/s with CL40 latency and 1.1V power draw. The 4Rx4 organisation suits high-density slots in mission-critical environments.

Replaces Slower or Smaller DDR5 Kits

The upgrade is worthwhile when the existing configuration runs below 4800 MT/s or offers less than 1TB total capacity. Moving to this specification adds bandwidth and error correction for virtualisation, database and compute workloads that exceed current memory headroom.

Limited to DDR5 4800 Registered Channels

The DDR5 interface caps transfer rate at 4800 MT/s per channel and requires a registered DIMM slot with ECC support. Systems that only accept unbuffered modules or operate at lower voltages cannot use this kit. Compatibility depends on the platform memory controller and BIOS implementation.

How it compares

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

Price $29,234.99
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 $29.23 per GB
Pricier than about 83% 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

Does the 288-pin DDR5 RDIMM form factor fit the memory slots on the ASUS RS700A-E12-RS12U server?

Yes, the 288-pin DDR5 RDIMM modules are the correct form factor for the compatible ASUS RS700A-E12-RS12U server.

What is the correct sequence for populating the eight 128GB modules across the dual-processor board?

Follow the ASUS RS700A-E12-RS12U manual to populate slots per CPU in the prescribed order; the common error is filling all slots on one processor before the other.

Will the Samsung, Micron or Hynix DRAM chips on these RDIMMs require firmware updates or thermal-pad replacement over time?

No firmware updates or thermal-pad changes are needed; the modules run at 1.10 V with no heat spreader and are validated for continuous server operation.

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