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Two green DDR5 RDIMM sticks, no heat spreader, 288-pin, 128GB each

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 ECC RDIMM for ASUS RS720Q-E11-IM

SKU CH-XQ54-K378P

A 256 GB DDR5 registered ECC kit with two 128 GB modules at 4800 MT/s and CL40 for the ASUS RS720Q-E11-IM 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 with two 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM for data integrity in servers
  • 1 V operation reduces power draw per module
  • Validated for ASUS RS720Q-E11-IM immersion-cooled chassis

Capacity and fit

This 256 GB kit delivers two 128 GB DDR5 RDIMM modules built for the ASUS RS720Q-E11-IM server. ECC and registered operation target administrators who need data integrity in dense compute nodes.

Registered ECC design

Each module uses a 288-pin DDR5 interface running at 4800 MT/s with CL40 latency at 1.1 V. The 4Rx4 organisation and lack of heat spreaders suit the immersion-cooled 2U4N chassis where airflow is managed by the system.

Upgrade path

The kit replaces lower-capacity DDR5 RDIMMs or fills empty slots to reach 256 GB per node. The jump is worth it when workloads demand maximum registered ECC capacity within the qualified motherboard configuration.

How it compares

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

Price $7,144.99
Pricier than about 83% 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 $27.91 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 numberMR38400-744K2
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

What speed does the DDR5 4800 interface run at in this kit?

The kit runs at DDR5 4800, rated PC5-38400 with a CAS latency of CL40.

What physical slot and module count does this 256GB kit need?

It uses two 288-pin DDR5 RDIMM modules, each 128GB, for a total of 256GB.

How are these registered ECC modules installed, and what step is often missed?

Insert each 1.10V 4Rx4 RDIMM into the correct ASUS RS720Q-E11-IM memory slots following the motherboard manual channel order, then enable ECC in BIOS.

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