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Four green 288-pin DDR5 RDIMM modules, no heat spreaders

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-PHXN-G719C MPN RS700A-E12-RS12U

128 GB DDR5 4800 CL40 ECC registered memory kit with four 32 GB modules at 1.1 V for the ASUS RS700A-E12-RS12U server

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB total capacity across four 32GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity in servers
  • CL40 CAS latency at 1.10V operating voltage
  • Validated for ASUS RS700A-E12-RS12U 1U dual-processor server

128GB DDR5 ECC RDIMM kit

This kit provides 128GB of DDR5 ECC registered memory in four 32GB modules. It is built for the ASUS RS700A-E12-RS12U dual-processor 1U server. Each module runs at 4800MT/s with CL40 latency at 1.1V. The registered design adds signal integrity for dense multi-socket platforms.

Server admins needing validated capacity

IT teams who require a pre-tested, system-specific upgrade for this exact ASUS 1U server will benefit from the matched kit. Buyers running consumer desktops, workstations without RDIMM support, or servers that need load-reduced or higher-speed modules should look elsewhere.

DDR5 4800 CL40 registered ECC

The single specification that determines fit is the DDR5 4800 CL40 registered ECC RDIMM form factor. The motherboard must accept 288-pin RDIMMs at this speed and latency with 1Rx4 organisation. If the platform requires a different voltage, rank layout or unbuffered DIMMs, this kit will not function.

How it compares

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

Price $3,562.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.84 per GB
Pricier than about 78% 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 numberMR38400-314K4
Total capacity128 GB (4 × 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 items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does this 128 GB kit need a motherboard that supports DDR5 4800 RDIMM modules?

Yes, the kit consists of 288-pin DDR5 4800 RDIMM modules running at 1.1 V with CL40 latency and registered ECC, so the board must accept DDR5 RDIMMs at that speed and voltage.

Can I add these 1Rx4 registered ECC modules to an older server that still has empty DIMM slots?

No, the modules are DDR5 4800 RDIMMs and will only work in systems designed for DDR5 registered memory; they are physically and electrically incompatible with older DDR generations.

How can I verify the 4800 MT/s speed and CL40 timing after installation?

Check the memory speed and CAS latency reported in the BIOS or UEFI setup, or use a system-information tool such as CPU-Z to confirm DDR5-4800 operation at CL40.

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