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Twelve green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM RS700-E11-RS12U 768GB (12x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-KVQZ-4B8ZK MPN RS700-E11-RS12U

768 GB of DDR5 4800 ECC registered server memory in a 12-module kit built for the ASUS RS700-E11-RS12U

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768 GB total capacity from 12 x 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity in servers
  • Low 1.10 V operation reduces power draw per module
  • Validated for ASUS RS700-E11-RS12U 1U dual-socket platform

Server-grade DDR5 memory kit

This NEMIX RAM kit delivers 768GB of DDR5 4800 registered ECC memory across twelve 64GB modules. It is built for the ASUS RS700-E11-RS12U 1U dual-socket server where maximum capacity and error correction are required. The 2Rx4 organisation and 1.10V operation match the platform's qualified configuration.

Thermals noise and power

Registered DDR5 modules run at 1.10V, keeping power draw low inside a dense 1U chassis. No heat spreaders are fitted, so airflow from the server's high-RPM fans moves directly over the DRAM. The CL40 latency at 4800 MT/s is the standard JEDEC timing for this density and voltage.

What the kit changes

Populating all twelve slots with qualified 64GB RDIMMs lets the ASUS RS700-E11-RS12U reach its 768GB maximum without mixing capacities or ranks. ECC and register circuitry protect data integrity for virtualisation, database and HPC workloads. The single part number MR38400-924K12 simplifies ordering and eliminates slot-by-slot compatibility checks.

How it compares

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

Price $21,345.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $27.79 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 numberMR38400-924K12
Total capacity768 GB (12 × 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 items768 GB (12 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 12 DDR5 RDIMM modules into the ASUS RS700-E11-RS12U server and which population rule is often missed?

Power down the server, open the chassis, and seat each 64 GB 288-pin RDIMM firmly until the ejector clips lock; the step most people miss is following the exact slot order in the ASUS manual so the 12 modules populate all channels evenly for the registered signal to train at 4800 MT/s.

What maintenance or replacement will this 768 GB DDR5 ECC kit need during its service life?

The modules have no heat spreaders and no moving parts, so the only upkeep is keeping the server's air filters clean and fans functional; if a single 64 GB RDIMM ever fails, the lifetime replacement warranty covers swapping that module without returning the full 12-piece kit.

What is the first limit that appears when this registered DDR5 4800 CL40 memory runs sustained workloads on the RS700-E11-RS12U?

The registered buffer and CL40 latency set the throughput ceiling; under continuous load the memory controller hits its maximum sustainable bandwidth at 4800 MT/s before any thermal throttle can occur on the bare DRAM packages.

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