What motherboard can support dual RTX 4090 GPUs?

4090 GPU compared to the 3 x DisplayPort Power Consumption 450W Form Factor Board Height: ; Board Length: 12; Board Height: ; Dual Slot

A 4090 can I would only buy AIO solutions straight from the manufactures Aircooled 2–3 slot cards and PCIe risers

3m auto slot 3rd party 4090s Namely The ROG Strix 4090 and MSI SuprimX 4090 third PCIe slot will run at Gen 4 x4 It should be more than enough

3 slot diffuser ASUS ROG Strix GeForce RTX 4090 24GB GDDR6X White OC Edition Gaming Graphics Card · $1, New · $1, Used