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Four green DDR5 RDIMM modules, bare circuit boards with gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM RS720Q-E11-RS8U 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-TW4W-2S2P2 MPN RS720Q-E11-RS8U

128 GB DDR5 ECC registered server memory kit running at 4800 MHz with CL40 latency and 1.1 V operation

  • 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 kit expands server memory capacity with four 32GB modules
  • DDR5 4800 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1V operation reduces power draw per module
  • Validated for ASUS RS720Q-E11-RS8U 2U4N high-density server

Compatible ASUS 2U4N server memory kit

This 128GB kit contains four 32GB DDR5 4800 registered ECC RDIMMs built for the ASUS RS720Q-E11-RS8U 2U4N high-density server. Each module runs at 1.1V with CL40 latency and a 1Rx4 organisation using major OEM chips. The 288-pin form factor fits the validated motherboard slots directly.

Suitability for registered ECC workloads

IT teams running virtualisation, database or compute clusters on the specified ASUS platform gain the error correction and signal integrity required for continuous operation. Systems that require unbuffered non-ECC memory or consumer DDR5 speeds cannot use this registered kit. Buyers needing larger per-module capacities or different rank configurations must select another part.

Deciding specification: registered ECC DDR5 4800

The single attribute that determines fit is the registered ECC DDR5 4800 288-pin RDIMM interface matching the ASUS RS720Q-E11-RS8U memory controller. If the target server demands a different speed, voltage, rank or unbuffered topology, this kit will not post. Verify the motherboard qualification list before ordering.

How it compares

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

Price $3,454.99
Pricier than about 74% 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 $26.99 per GB
Pricier than about 75% 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

Will the 1Rx4 4800 MHz modules run stably alongside any existing DDR5 RDIMMs already installed in the ASUS RS720Q-E11-RS8U?

All four 32 GB modules are 1Rx4 DDR5 4800 CL40 registered ECC at 1.1 V; matching rank, speed, voltage and ECC type is required for stable mixed-population operation.

How can I verify the kit is operating at the rated 4800 MT/s and CL40 after installation?

Check the memory speed and latency reported in the server BIOS or UEFI; it should show DDR5 4800 with CAS latency 40 for each of the four 288-pin RDIMMs.

Does the package include only the four 32 GB RDIMMs or are any cables, brackets or tools supplied?

The box contains the 128 GB kit as four 32 GB DDR5 4800 CL40 1.1 V 288-pin ECC registered RDIMMs; no cables, brackets or tools are included.

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