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Sixteen green DDR5 RDIMM modules in a clear plastic tray

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 512GB (16x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-FG42-PYY7X MPN RS700A-E12-RS12U

512 GB DDR5 4800 CL40 ECC registered server kit with 16×32 GB 1Rx4 modules at 1.1 V for ASUS RS700A-E12-RS12U

  • Total capacity512 GB (16 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from 16 modules of 32 GB each
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered design detects and corrects data errors automatically
  • Low 1.10 V operation reduces power draw in dense configurations
  • Validated for ASUS RS700A-E12-RS12U 1U dual-processor server

ASUS 1U dual-processor server kit

This 512 GB kit contains sixteen 32 GB DDR5 4800 ECC RDIMM modules built for the ASUS RS700A-E12-RS12U server. Registered buffering and on-die error correction protect data integrity in mission-critical workloads. IT teams scaling memory in dense 1U chassis use this exact configuration. Buyers needing consumer DIMMs or non-ECC memory should look elsewhere.

Sustained load behaviour

Modules run at 1.10 V with CL40 latency across all sixteen slots under continuous operation. Registered design reduces electrical load on the memory controller during prolonged throughput. Major OEM Samsung, Micron or Hynix chips are stress-tested under load before shipping. Systems requiring lower latency or higher frequency than DDR5 4800 will not match this specification.

Installation notes

288-pin RDIMMs seat in standard DDR5 server slots; no heat spreader means clearance is minimal. Population rules for the RS700A-E12-RS12U motherboard dictate specific slot order across both CPUs. Mixing ranks or capacities breaks registered channel training. Technicians unfamiliar with dual-processor memory mapping should consult the board manual first.

How it compares

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

Price $13,303.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (16 × 32 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $25.98 per GB
Pricier than about 71% 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 numberMR38400-314K16
Total capacity512 GB (16 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items512 GB (16 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

At 1.10V and CL40, how much heat and power should I expect from the 16 modules running continuously in the RS700A-E12-RS12U?

Each 32GB 1Rx4 RDIMM operates at the standard DDR5 1.10V. Registered buffering and ECC add minimal overhead, so total draw stays within the platform's 4800 MT/s power envelope; airflow across the 288-pin sockets is sufficient — no extra cooling is required.

Besides the 16 DIMMs in this kit, what else must already be installed for the RS700A-E12-RS12U to post?

The server needs both CPU sockets populated with compatible ASUS-validated processors, the correct BIOS revision for 512GB of DDR5 4800 registered ECC memory, and the 12 memory channels (six per CPU) free to accept the 16 modules.

Can I mix these 1Rx4 CL40 sticks with any existing DDR5 RDIMMs of different rank or latency in the same RS700A-E12-RS12U?

ASUS-qualified memory rules require identical rank (1Rx4), speed (4800), voltage (1.10V) and CAS latency (CL40) across every populated slot; mixing different ranks or timings will prevent the system from completing memory training.

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