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
Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 192GB (12x16GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-WWJF-GMSNY MPN RS520A-E12-RS12U

A 192GB DDR5 kit of twelve 16GB ECC registered DIMMs running at 4800MHz CL40 for the ASUS RS520A-E12-RS12U server

  • Total capacity192 GB (12 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 192 GB total capacity from twelve 16 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design detects and corrects data errors
  • 1 V operating voltage reduces server power draw
  • Validated for ASUS RS520A-E12-RS12U single-socket 2U server

ASUS RS520A-E12 192GB DDR5 Kit

This 192GB kit contains twelve 16GB DDR5 4800 registered ECC RDIMMs built for the ASUS RS520A-E12-RS12U single-socket 2U server. Each module runs at 1.1V with CL40 latency and a 1Rx8 organisation. The memory is validated for that specific platform to ensure stability in enterprise workloads.

Thermals and power in normal use

Registered DDR5 modules operate at 1.1V, reducing power draw compared with previous DDR generations. The kits ship without heat spreaders, relying on the server chassis airflow to maintain safe temperatures. ECC and registered buffering add minimal latency overhead while protecting data integrity under sustained load.

Deciding specification: 12 x 16GB DDR5 4800 RDIMM

The single factor that determines fit is whether your ASUS RS520A-E12-RS12U requires a full population of twelve 288-pin registered DIMMs at 4800 MT/s. If the board calls for a different capacity per slot, a different rank structure, or a non-registered module type, this kit will not be compatible.

How it compares

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

Price $4,814.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 192 GB (12 × 16 GB)
Higher than about 75% of the 20,941 comparable items (median 32 GB).
Price per GB $25.08 per GB
Pricier than about 70% 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 numberMR38400-618K12
Total capacity192 GB (12 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items192 GB (12 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 12 DDR5 4800 RDIMMs in the ASUS RS520A-E12-RS12U and which slot-population rule is commonly missed?

Power off the server, open the chassis, and seat each 16 GB module in the 288-pin slots following the motherboard's population sequence; the step most often missed is skipping the prescribed channel order, which prevents the 192 GB kit from training at 4800 MT/s.

What maintenance or replacement will the registered ECC kit need during its service life?

The modules have no moving parts or heat spreaders, so routine maintenance is limited to keeping server airflow clean; replacement is only required if a module fails ECC correction or the platform is upgraded beyond DDR5 4800.

What limit appears first when the 1Rx8 RDIMMs run sustained workloads at CL40?

The CAS latency of CL40 at 1.10 V sets the timing ceiling; under continuous load the memory controller hits this latency boundary before thermal or voltage limits become a factor.

More in Model-Specific Memory Upgrades

Similar items