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Two green DDR5 RDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM RS700A-E12-RS4U 256GB (2x128GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-B3Z5-6G04T MPN RS700A-E12-RS4U

A 256 GB registered DDR5 ECC kit with two 128 GB modules at 4800 MT/s and CL40, validated for the ASUS RS700A-E12-RS4U 1U dual-processor server

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity in a 2 x 128 GB kit
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM design protects data integrity
  • Low 1.10 V operation reduces power draw
  • 288-pin 4Rx4 modules built for ASUS RS700A-E12-RS4U compatibility

Compatibility and Capacity

This 256 GB kit (2 x 128 GB) is built for the ASUS RS700A-E12-RS4U dual-processor 1U server. It delivers DDR5 4800 registered ECC memory at 1.1 V with CL40 latency. The modules use major OEM chips and are stress tested for mission-critical workloads.

Who Should Consider Alternatives

This kit suits administrators upgrading the named ASUS 1U server to its maximum supported density. Buyers needing memory for a different platform, a workstation board, or a non-ECC consumer system should look elsewhere because the registered ECC RDIMM form factor and server-specific validation will not function in those environments.

Speed and Pin Count

The memory operates at DDR5 4800 (PC5-38400) through a 288-pin RDIMM interface, which is the single specification that determines whether the modules physically fit and electrically match the server's memory slots.

How it compares

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

Price $8,410.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $32.86 per GB
Pricier than about 90% 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 numberMR38400-744K2
Total capacity256 GB (2 × 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 items256 GB (2 × 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 256 GB kit include both 128 GB modules or must the second module be purchased separately?

The kit contains two 128 GB RDIMMs for a total of 256 GB; nothing else is required for this capacity.

Should I choose the 4800 MT/s CL40 version or a different speed grade for the RS700A-E12-RS4U server?

This module is validated at DDR5 4800 with CL40 latency for the RS700A-E12-RS4U platform; select this specification to match the qualified configuration.

What does the 4800 MT/s rating mean once the memory is installed in the ASUS dual-processor server?

The modules will operate at 4800 MT/s delivering PC5-38400 bandwidth with ECC and registered buffering for stable server workloads.

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