> What's the problem with eGPUs? The most problematic thing I see is that they only work with intel CPUs for now and that all enclosures are tb3.

Maybe they've gotten better, but the last time I looked at reviews they were generally flaky (driver issues or incompatibilities with particular games) and had performance issues, to the point that a lower-model built-in card would often outperform a higher-model in an external enclosure. I'm sure they're coming eventually, but I haven't heard of anyone having an actually polished experience with one in day-to-day use yet.