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Four green DDR5 RDIMM modules, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM RS700-E11-RS12U 512GB (4x128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-RQ6E-F49J0 MPN RS700-E11-RS12U

512 GB kit of four 128 GB DDR5 4800 CL40 ECC registered DIMMs for ASUS RS700-E11-RS12U servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity under load
  • Low 1.1 V operation reduces server power draw
  • Validated for ASUS RS700-E11-RS12U 1U dual-socket servers

512GB DDR5 4800 ECC RDIMM kit

This 512GB kit contains four 128GB DDR5 4800 ECC RDIMM modules built for the ASUS RS700-E11-RS12U 1U dual-socket server. Registered DIMMs with on-die ECC protect data integrity in mission-critical workloads. The modules run at 1.10V with CL40 latency and a 4Rx4 organisation.

Quad-channel 4Rx4 layout

Four 288-pin RDIMMs populate each memory channel to deliver maximum registered capacity per socket. The 4Rx4 rank structure allows the memory controller to interleave across ranks for sustained throughput. No heat spreaders are fitted, so airflow in the 1U chassis must be sufficient for bare DRAM packages.

Verify DIMM slots and BIOS revision

Confirm the RS700-E11-RS12U has at least four free DDR5 RDIMM slots per processor and that the current BIOS supports 128GB 4Rx4 modules at 4800 MT/s. Registered ECC RDIMMs will not work in desktop or unbuffered platforms. Mixed-rank or mixed-voltage configurations are not supported by this kit.

How it compares

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

Price $15,394.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $30.07 per GB
Pricier than about 86% 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 numberMR38400-744K4
Total capacity512 GB (4 × 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 items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the RDIMMs need any firmware updates or periodic re-seating in the ASUS RS700-E11-RS12U server?

The modules are stress-tested for compatibility with the ASUS RS700-E11-RS12U; no firmware updates or re-seating schedule is required beyond standard server maintenance.

What limits sustained throughput first — the CL40 latency or the 4800 MT/s bus?

The DDR5 4800 bus sets the peak bandwidth ceiling; CL40 timing determines access latency but does not cap throughput.

How much heat and power do the four 128 GB DDR5 4800 RDIMMs draw at 1.1 V under continuous load?

Each module operates at 1.1 V; total kit power scales with all four 128 GB sticks active, and registered buffering adds minimal overhead.

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