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Two green DDR5 RDIMM modules with black chips and gold contacts

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 32GB (2x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-F3CM-80W2P MPN RS520A-E12-RS24U

32 GB dual-channel DDR5-4800 ECC registered kit with CL40 latency and 1.1 V operation for the ASUS RS520A-E12-RS24U server

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Registered ECC protects data integrity in server workloads
  • DDR5 4800 MT/s delivers high bandwidth for demanding applications
  • 32 GB kit (2×16 GB) expands capacity for multi-threaded tasks
  • 1 V operation reduces power draw per module
  • Validated for ASUS RS520A-E12-RS24U 2U server compatibility

Server-Ready DDR5 ECC Memory

This 32 GB kit delivers two 16 GB DDR5 4800 registered DIMMs built for the ASUS RS520A-E12-RS24U server. ECC and registered buffering protect data integrity in mission-critical workloads. The modules operate at 1.10 V and conform to the PC5-38400 standard. IT teams can install them directly into the qualified platform without guesswork.

Thermals and Power Efficiency

Registered DDR5 modules run at 1.10 V, keeping power draw low during sustained server loads. The absence of a heat spreader allows unrestricted airflow through dense 2U chassis designs. CL40 latency supports stable throughput without excessive voltage. Quiet operation is maintained in fan-cooled rack environments.

Build Integration and Constraints

The 288-pin RDIMM form factor fits only DDR5 RDIMM slots on the target ASUS motherboard. Two 1Rx8 modules populate a matched pair for optimal channel balance. No desktop or unbuffered platforms are supported. Builders needing higher capacity or different form factors must look elsewhere.

How it compares

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

Price $831.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $26.00 per GB
Pricier than about 71% 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 numberMR38400-618K2
Total capacity32 GB (2 × 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 items32 GB (2 × 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 288-pin DDR5 RDIMM modules in the ASUS RS520A-E12-RS24U server, and what step is commonly missed?

Power down the server, open the chassis, align the notch on each 1Rx8 module with the slot key, press firmly until both locking tabs click, then verify in BIOS that all 32GB at 4800 MT/s are recognised — the step often missed is seating both modules fully so the tabs engage on each side.

What maintenance or replacement will the 1.1V ECC registered kit need over its service life?

The modules have no heat spreaders and no moving parts, so no scheduled maintenance is required; replacement is only necessary if a module fails, which ECC logging will flag through corrected error counts.

What limit appears first when the 32GB kit runs sustained workloads at CL40?

The registered buffer and 1.1V operation keep signal integrity stable, so the first ceiling is the 4800 MT/s data rate — bandwidth saturates before thermal or voltage limits are reached.

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