PCIe PCIe 4.0 or Go Home Go Home Intel - you are 14 nm and PCIe 3.0 AMD is 7 nm and PCIe 4.0 Arm is 7nm and PCIe 4.0/5.0 IBM is 7 nm and PCIe 4.0/5.0 + OpenCAPI
Apple 2020 Apple Mac mini M1 + eGPU Three GPUs (one iGPU, two eGPU) for a monster-graphics output 2021 Mac mini M1. 6 x 6K displays 6 x 6016 x 3384 = 122,148,864 pixels
