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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 512GB (4x128GB) DDR5 4800 CL40 1.1V ECC RDIMM memory upgrade

SKU CH-4W4B-NWMW4 MPN RS700A-E12-RS12U

512GB DDR5 4800 ECC registered server kit, four 128GB modules at CL40 1.1V for ASUS RS700A-E12-RS12U

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects memory errors
  • 1 V operating voltage reduces server power draw
  • Validated for ASUS RS700A-E12-RS12U 1U dual-processor server

ASUS 1U Server Memory Kit

This 512GB kit contains four 128GB DDR5 RDIMM modules built for the ASUS RS700A-E12-RS12U dual-processor server. Each module runs at 4800MT/s with CL40 latency at 1.1V and includes ECC and registered buffering for error correction and signal integrity. The 4Rx4 organisation maximises density per slot in a 288-pin form factor.

Suited For And Limits

This memory suits administrators expanding the RS700A-E12-RS12U to its maximum supported capacity with validated DDR5 ECC RDIMM modules. Buyers who need a different form factor such as UDIMM or SO-DIMM, or who require a lower voltage than 1.1V, should look elsewhere. Systems that do not support registered ECC DDR5 cannot use this kit.

Deciding Specification

The decisive specification is the 4Rx4 registered ECC DDR5 4800 configuration validated for the ASUS RS700A-E12-RS12U 1U server. Confirm the motherboard memory-qualified vendor list matches part number MR38400-744K4 before purchase. This ensures the modules initialise correctly in all twelve slots of the dual-processor platform.

How it compares

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

Price $14,450.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $28.22 per GB
Pricier than about 79% 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 numberMR38400-744K4
Total capacity512 GB (4 × 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 items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What comes in the box and does anything else need to be purchased for installation?

The kit includes four 128 GB DDR5 4800 CL40 1.1 V ECC registered RDIMMs, totalling 512 GB. No additional memory parts are required.

Why choose the 512 GB (4 × 128 GB) kit instead of a smaller capacity?

This kit fills four DIMM slots with 128 GB 4Rx4 modules, delivering the maximum supported capacity per channel for the ASUS RS700A-E12-RS12U server.

What does the 4800 MT/s rating mean once the modules are installed in the server?

The memory will run at DDR5 4800 (PC5-38400) with CL40 latency at 1.1 V, providing the rated bandwidth and error-correcting registered operation for the qualified platform.

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