Maybe you're interested in a NUC, then. I remembered earlier there is an alternative GPU form factor for laptops called MXM. You can get desktop boards that ac

Maybe you're interested in a NUC, then. I remembered earlier there is an alternative GPU form factor for laptops called MXM. You can get desktop boards that accept these, I think they are called Micro-STX or Mini-STX. They are small, and the GPU is a flat module that plugs in more like a daughterboard than a PCI card. You're still looking at low-power CPU though. I'm not sure what your vision looks like, to be honest. I think you want a laptop without the integrated screen and keyboard. That's a NUC, IMO; if an integrated or laptop-grade GPU isn't good enough, you'd want to do eGPU over thunderbolt I guess.