The ASRock Rack ROMED8-2T has seven PCIe x16 slots. They're too close together to directly put seven 4090s on the board, but you'd just need some riser cables t

The ASRock Rack ROMED8-2T has seven PCIe x16 slots. They're too close together to directly put seven 4090s on the board, but you'd just need some riser cables to mount the cards on a frame.