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Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM RS720A-E12-RS24U 1.5TB (12x128GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-RSN6-7W4ED MPN RS720A-E12-RS24U

A 1.5 TB DDR5 ECC registered server memory kit with twelve 128 GB modules running at 4800 MT/s for the ASUS RS720A-E12-RS24U

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 5 TB total capacity from twelve 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 for high bandwidth
  • ECC registered RDIMM design protects data integrity
  • 1 V operating voltage reduces power draw
  • Built for ASUS RS720A-E12-RS24U 2U dual-processor server

1.5TB DDR5-4800 ECC RDIMM kit

This 1.5 terabyte memory kit contains twelve 128 GB registered DDR5 modules rated at 4800 MT/s with CL40 latency and 1.1 V operation. It is built for the ASUS RS720A-E12-RS24U dual-processor 2U server and delivers ECC protection for data integrity. The 288-pin RDIMM form factor fits the qualified memory slots on that platform.

Compatibility and capacity fit

The kit suits administrators who need the full 1.5 TB maximum in a single qualified package for the named ASUS server. It is not for systems that require unbuffered UDIMMs, lower-density modules, or a different DDR generation. Buyers using other server models or workstation boards should verify their own qualified-vendor lists before purchasing.

Registered ECC RDIMM requirement

The modules are 4Rx4 registered ECC DDR5 RDIMMs, a configuration the target server’s memory controller expects. Installing unregistered or non-ECC memory would prevent boot or disable error correction. This specification is the decisive factor for correct operation in the qualified system.

How it compares

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

Price $43,161.99
Pricier than about 95% of the 21,161 comparable items (median $397.99).
Total capacity 1.5 TB (12 × 128 GB)
Higher than about 97% of the 20,941 comparable items (median 32 GB).
Price per GB $28.77 per GB
Pricier than about 81% 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 numberMR38400-744K12
Total capacity1.5 TB (12 × 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 items1.5 TB (12 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the twelve 288-pin DDR5 RDIMMs in the ASUS RS720A-E12-RS24U server?

Power down the server, open the chassis, and insert each of the twelve 128 GB modules into the DIMM slots following the motherboard's population sequence; the registered 4Rx4 modules must click fully into the 288-pin sockets for the ECC buffer to initialise correctly.

What maintenance or replacement will this 1.5 TB memory kit need later?

The modules have no heat spreaders and run at 1.1 V, so only periodic dust removal from the DIMM area is required; if a module fails the lifetime replacement covers it, otherwise no scheduled replacement is needed.

What limit appears first when this DDR5 4800 kit runs sustained workloads?

The CL40 latency at 4800 MT/s sets the bandwidth ceiling, so sustained throughput tops out at the PC5-38400 rate before thermal or voltage limits are reached.

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