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Large rectangular ATX motherboard with dark metallic finish and multiple expansion slots

ASUS

ASUS ROG ZENITH II EXTREME ALPHA AMD motherboard

SKU CH-MJVB-86DM3

Socket sTRX4 ATX motherboard with AMD TRX40 chipset supporting up to 256GB DDR4 memory

  • CPU Socket TypeSocket sTRX4
  • ChipsetAMD TRX40
  • Maximum Memory Supported256GB
  • Socket sTRX4 supports high-core-count AMD CPUs
  • AMD TRX40 chipset delivers workstation-class platform features
  • DDR4 memory architecture scales to 256GB capacity
  • ATX form factor fits standard chassis layouts
  • 100% full inspection performed before shipping

AMD TRX40 workstation board

The ASUS ROG ZENITH II EXTREME ALPHA is an ATX motherboard built around the AMD TRX40 chipset and the sTRX4 socket. It targets professionals who need a stable platform for multi-threaded workloads such as rendering, simulation or scientific computing. The board supports up to 256GB of DDR4 memory across its slots.

DDR4 capacity and SATA connectivity

Memory scales to 256GB using standard DDR4 modules, giving headroom for large datasets and virtual machines. Storage expansion relies on SATA ports for drives that use that interface. The layout follows the ATX form factor so it fits common workstation chassis and power supplies.

Step up from consumer platforms

Moving to this board from a mainstream desktop adds the sTRX4 socket and the TRX40 chipset, which together unlock higher core counts and quad-channel memory bandwidth. The jump is worth it when your applications scale across many threads and benefit from the larger memory ceiling. The package includes the board, a CMOS battery, one SATA cable, the rear I/O shield and a Wi-Fi antenna if the model has onboard wireless.

Highlights

  • Socket sTRX4 supports high-core-count AMD CPUs
  • AMD TRX40 chipset delivers workstation-class platform features
  • DDR4 memory architecture scales to 256GB capacity
  • ATX form factor fits standard chassis layouts
  • 100% full inspection performed before shipping

Specifications

BrandASUS
SeriesASUS ROG ZENITH II EXTREME ALPHA
ModelASUS ROG ZENITH II EXTREME ALPHA
CPU Socket TypeSocket sTRX4
ChipsetAMD TRX40
Maximum Memory Supported256GB

Questions about this item

Which memory capacity should I choose for this board?

The board supports up to 256 GB of DDR4, so select a kit that matches your workload and stays within that limit.

What does the 256 GB memory ceiling mean once the board is installed?

It sets the total system RAM you can populate across all slots; the OS and applications will only see memory up to that amount.

Which storage interface is provided and what does it limit?

SATA is the only storage interface listed, capping drive throughput to the SATA bus speed.

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