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Eight green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 512GB (8x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-Q871-RJ5JK MPN RS700A-E12-RS12U

Eight 64 GB DDR5 ECC RDIMM modules totalling 512 GB at 4800 MHz CL40 for ASUS RS700A-E12-RS12U servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from eight 64 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400
  • ECC registered design detects and corrects data errors
  • 10 V operating voltage reduces power draw
  • Qualified for ASUS RS700A-E12-RS12U 1U dual-processor server

512GB DDR5-4800 ECC RDIMM kit

This 512GB kit contains eight 64GB DDR5-4800 registered ECC modules built for the ASUS RS700A-E12-RS12U 1U dual-processor server. Each module runs at 1.1V with CL40 latency and a 2Rx4 organisation on a 288-pin RDIMM form factor. The kit delivers 512GB of registered, error-correcting memory for mission-critical workloads.

Who this suits and who should look elsewhere

IT teams upgrading the named ASUS 1U server to its full 512GB capacity will find a matched, stress-tested kit that installs in minutes. Builders using consumer motherboards, workstations without RDIMM support, or servers that require unbuffered UDIMMs or a different speed grade cannot use this memory.

Deciding specification — registered ECC RDIMM

The modules are registered ECC DDR5 RDIMMs, so the system memory controller must support registered operation and error correction. If the target platform only accepts unbuffered non-ECC DDR5, the modules will not function.

How it compares

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

Price $14,070.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $27.48 per GB
Pricier than about 77% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-924K8
Total capacity512 GB (8 × 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 items512 GB (8 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I choose the 512GB kit with eight 64GB modules or a different capacity?

This kit supplies 512GB total using eight 64GB DDR5 RDIMMs, matching the ASUS RS700A-E12-RS12U server's qualified configuration.

What does the 4800 speed rating mean once the modules are installed in the server?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.10V, delivering the rated throughput the server's memory controller expects.

Does the 288-pin DDR5 RDIMM interface limit how much bandwidth I can use?

The 288-pin registered DDR5 form factor carries the full PC5-38400 data rate; the server's memory controller and CPU determine the practical ceiling.

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