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
Eight bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-ZEZJ-QE638 MPN RS520A-E12-RS12U

256 GB DDR5 4800 ECC registered server kit with eight 32 GB modules at CL40 and 1.1 V for the ASUS RS520A-E12-RS12U 2U server

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity across eight 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM protects data integrity in critical systems
  • Low 1.1 V operation reduces power draw per module
  • Validated for ASUS RS520A-E12-RS12U 2U single-socket server

256GB DDR5 ECC RDIMM Kit

This 256GB kit contains eight 32GB DDR5 4800 CL40 registered DIMMs built for the ASUS RS520A-E12-RS12U single-socket 2U server. ECC and registered buffering protect data integrity under sustained enterprise workloads.

Upgrade from lower-capacity DDR5

Replacing smaller DDR5 modules with this 8x32GB kit fills all twelve slots in the RS520A-E12-RS12U, raising total memory to 256GB. The jump is worth it when virtualization, database or analytics jobs exceed the capacity of a partial population.

Handles large VM fleets and in-memory databases

At 256GB the kit comfortably runs dozens of virtual machines or sizable in-memory datasets. Workloads that grow beyond this ceiling will require a platform with higher per-socket memory limits.

How it compares

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

Price $6,643.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $25.95 per GB
Pricier than about 71% 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 numberMR38400-314K8
Total capacity256 GB (8 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items256 GB (8 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will these 288-pin DDR5 RDIMMs fit the ASUS RS520A-E12-RS12U 2U server chassis?

Yes, the kit is built for the ASUS RS520A-E12-RS12U single-socket 2U server and uses the standard 288-pin DDR5 RDIMM form factor that matches the motherboard slots.

What is the correct way to populate the eight 32 GB modules in the RS520A-E12-RS12U, and what step is often missed?

Follow the motherboard manual’s population order for 1Rx4 registered DIMMs; the step most often missed is seating each module until both ejector clips click shut.

When should the 1.1 V DDR5 4800 CL40 ECC registered modules be replaced?

Replace a module if the server logs uncorrectable ECC errors or if a BIOS memory diagnostic fails; otherwise the modules are rated for continuous server operation.

More in Model-Specific Memory Upgrades

Similar items