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Sixteen green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM RS720-E11-RS12U 1TB (16x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-FBDD-F9PA5 MPN RS720-E11-RS12U

1 TB registered ECC DDR5 server kit with sixteen 64 GB modules at 4800 MT/s CL40 for ASUS RS720-E11-RS12U

  • Total capacity1 TB (16 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity for memory-intensive server workloads
  • 16 modules of 64GB each simplify large-scale deployment
  • DDR5 4800 speed delivers high bandwidth for data processing
  • ECC registered design protects data integrity under load
  • 1V operation reduces power draw in dense configurations

Target system

This 1 TB kit is built for the ASUS RS720-E11-RS12U dual-socket 2U server. Sixteen registered DDR5 RDIMM modules provide the full memory complement for demanding enterprise workloads. ECC protection and registered signalling maintain data integrity under sustained load.

Decisive spec

The modules run at DDR5 4800 with CL40 latency at 1.10 V. Registered 2Rx4 organisation and on-die ECC are mandatory for the RS720-E11-RS12U memory controller; non-registered or non-ECC DIMMs will not function in this platform.

Build integration

The 288-pin RDIMMs occupy all sixteen slots in the server, leaving no free sockets for later expansion. No heat spreaders are fitted, so airflow through the 2U chassis must meet ASUS thermal guidelines. The kit arrives as a matched 16-module set qualified for the target system.

How it compares

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

Price $28,137.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (16 × 64 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $28.14 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 numberMR38400-924K16
Total capacity1 TB (16 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items1 TB (16 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

What does the 4800 MT/s rating mean once the modules are installed in the ASUS RS720-E11-RS12U server?

The kit runs at DDR5 4800 (PC5 38400) when the server's memory controller is set to that speed; actual throughput depends on the CPU's supported memory frequency and the number of populated channels.

How does the DDR5 RDIMM interface and CL40 latency affect real-world bandwidth?

Registered DDR5 modules add one cycle of buffering for signal integrity at high capacity; CL40 at 4800 MT/s sets the minimum read latency, while peak bandwidth is capped by the PC5 38400 standard and the server's memory-channel configuration.

What physical clearance and slot requirements does this 16 x 64 GB kit need in the 2U chassis?

Each module is a standard 288-pin DDR5 RDIMM without a heat spreader; the 2U server must provide 16 available DIMM slots with enough vertical clearance for bare modules and support 2Rx4 registered DIMMs at 1.10 V.

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