We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Sixteen green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 1TB (16x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-82SK-JRRS4 MPN RS520A-E12-RS12U

16 registered DDR5 modules totalling 1 TB at 4800 MT/s with ECC for the ASUS RS520A-E12-RS12U server

  • Total capacity1 TB (16 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity from 16 modules of 64GB each
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered RDIMM design protects data integrity
  • 1V operation reduces power draw under load
  • Validated for ASUS RS520A-E12-RS12U 2U server

Server memory kit composition

This 1 TB kit consists of sixteen 64 GB DDR5 4800 modules built to PC5-38400 speed with CL40 latency. Each stick is a 288-pin ECC registered DIMM operating at 1.1 V and organised as 2Rx4 using major OEM DRAM. The kit is validated for the ASUS RS520A-E12-RS12U single-socket 2U server.

Who should consider this and who should not

IT teams upgrading that specific ASUS 2U server to its maximum supported capacity will find a matched, stress-tested set ready for mission-critical workloads. Builders working with any other platform, desktop board, or a server requiring unbuffered or lower-density modules cannot use this registered ECC kit.

Deciding specification

The registered ECC RDIMM form factor combined with the 2Rx4 organisation and DDR5 4800 speed determines whether the memory will initialise in the target ASUS server; only systems qualified for this exact configuration should be populated with these modules.

How it compares

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

Price $24,565.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (16 × 64 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $24.57 per GB
Pricier than about 69% 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 numberMR38400-924K16
Total capacity1 TB (16 × 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 items1 TB (16 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the kit contain all 16 modules or do I need to order extra DIMMs?

The package includes the full 1 TB kit with 16 matched 64 GB modules, so no additional DIMMs are required.

Why choose the 1 TB 16×64 GB configuration instead of a smaller kit?

This configuration fills the maximum supported slots for the ASUS RS520A-E12-RS12U, giving the highest capacity without mixing densities.

What does the CL40 latency mean when the memory runs at DDR5 4800 in this server?

CL40 is the CAS latency at the rated 4800 MT/s speed; the modules operate at 1.10 V with registered ECC for stability.

More in Model-Specific Memory Upgrades

Similar items