GIGABYTE WRX90 AI TOP Image © GigabyteGIGABYTE WRX90 AI TOP (Image © Gigabyte)

The WRX90 AI TOP is designed to maximize graphics processing performance. It features seven full-length PCIe 5.0 slots that are directly connected to the CPU. Six of these slots operate at x16 bandwidth, while the seventh operates at x8. To expand capacity beyond the physical slots, GIGABYTE has integrated two MCIO-8i ports. These allow for the addition of extra PCIe devices and memory. By utilizing these external ports, the system can support up to nine GPUs simultaneously.

Memory Architecture and Power Supply

The motherboard supports an 8-channel memory architecture via eight DDR5 RDIMM slots. It accommodates up to 2 TB of ECC-registered memory. Power supply stability is ensured by a 32+3+3+3-phase design with 110-A power stages and a 14-layer PCB. To manage the heat generated by these components, GIGABYTE has implemented active cooling for the VRM, the chipset, and the memory. A cooling module with two fans is assigned to the DDR5 slots, designed to lower memory temperatures by up to 43 degrees Celsius.

Memory and Internal Connectivity

Memory options on the motherboard include:

  • Two PCIe 5.0 M.2 slots
  • One PCIe 4.0 M.2 slot
  • Four SATA 6 Gb/s ports

The motherboard also features the aforementioned MCIO-8i ports. One of these ports shares bandwidth with the two PCIe 5.0 M.2 slots; if the MCIO port is in use, the M.2 slots are disabled. The motherboard follows the E-ATX form factor and measures 305 × 330 mm.

GIGABYTE WRX90 AI TOP IO PortsGIGABYTE WRX90 AI TOP IO Ports (Image © Gigabyte)

Networking, I/O, and Remote Management

For high-speed data transfer, the board features two Intel X710 10-GbE network controllers. The rear I/O panel includes:

  • Two USB4 Type-C ports with DisplayPort video output (up to 3840 × 2160 at 240 Hz)
  • Six USB 3.2 Gen 2 Type-A ports
  • One analog D-Sub port for graphics output from older devices
  • One optical S/PDIF output

Remote management is handled by an ASPEED AST2600 controller, which enables IPMI management via a dedicated network port.

GIGABYTE WRX90 AI TOP BackplateGIGABYTE WRX90 AI TOP Backplate (Image © Gigabyte)

Software and Operating System Compatibility

The WRX90 AI TOP is compatible with Windows 11 and Ubuntu 24.04 LTS. GIGABYTE provides a dedicated AI TOP utility for Ubuntu to support local AI workloads. The board also supports AMD EXPO and XMP memory profiles.