What is the best GPU and monitor configuration for Blender?

Right now I have a RTX 5060 (don't kill me) and Ultra 7 256K integrated graphics. I know people here hate plugging monitors into the motherboard slot but if I did proceed to do so would the iGPU take over viewport and desktop rendering in blender, thus freeing up the RTX 5060 for serious final renders? Right now both monitors are plugged into the 5060, which has me wondering does it really affect the performance.