motherboard with most pcie slots: PCIE slot configuration in bios?. GIGABYTE Z690 AERO G Review: Powerhouse For Creators - Tech4Gamers. Graphics Card Slot Types Explained (GPU Width Differences).
My first motherboard runs the 3x full size
slots in a PCIE 3.0 4x configuration, with the single
slot at 1x configuration.
The Gigabyte Z690 Aero G is a creator-focused motherboard packed with four PCIe 4.0 M.2
NVMe slots for speedy storage and PCIe 5.0 for GPU bandwidth.
It’s essential to check the motherboard manual or the GPU manufacturer’s specifications to determine which PCIe
slots are compatible with the GPU.