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Two green DDR5 RDIMM sticks, black chips, no heat spreader

NEMIX RAM

NEMIX RAM RS700A-E12-RS4U 64GB (2x32GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-P28Q-39HKV MPN RS700A-E12-RS4U

DDR5 4800 ECC registered server memory kit, 64 GB in two 32 GB modules, CL40 at 1.1 V, validated for ASUS RS700A-E12-RS4U

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB total capacity for demanding server workloads
  • DDR5 4800 speed delivers high bandwidth performance
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power consumption in dense systems
  • Validated for ASUS RS700A-E12-RS4U 1U dual-processor servers

Capacity and purpose

This kit provides 64 GB of DDR5 memory in two 32 GB registered DIMMs. It is built for the ASUS RS700A-E12-RS4U dual-processor server and runs at 4800 MT/s with ECC protection. The modules operate at 1.1 V and use a 1Rx4 organisation. They are intended for administrators expanding memory capacity in that specific 1U platform.

Who this suits and who it does not

This memory fits IT teams upgrading the named ASUS server where registered ECC DDR5 is required. It will not work in systems that accept only unbuffered UDIMMs, desktop platforms, or laptops. Buyers needing lower-voltage 1.1 V modules for other OEM servers should verify their own qualified-vendor lists before purchasing.

Deciding specification

The registered ECC RDIMM form factor with 1Rx4 rank and DDR5 4800 speed is the single attribute that determines compatibility with the ASUS RS700A-E12-RS4U. Only modules matching this exact registration, error-correction and data-rate combination will be accepted by the server memory controller.

How it compares

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

Price $1,611.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $25.19 per GB
Pricier than about 70% 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 numberMR38400-314K2
Total capacity64 GB (2 × 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 items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does the 1.10 V DDR5 4800 kit draw when the server runs continuously?

Each module operates at 1.10 V, the standard DDR5 voltage, so total power scales with the 64 GB capacity and the 4800 MT/s data rate under sustained load.

What motherboard slot and chipset support must my ASUS RS700A-E12-RS4U already have for these 288-pin RDIMMs to work?

The board needs DDR5 RDIMM slots with a registered-memory-capable chipset; the 288-pin form factor and ECC registration match the server's native memory architecture.

Will the CL40 1Rx4 modules run stably alongside any existing DDR5 4800 RDIMMs I keep in the other channels?

Yes, identical speed (4800 MT/s), voltage (1.10 V), rank (1Rx4) and registered ECC design allow mixed-channel operation without timing conflicts.

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