I'd like to stick with amd for heat load reasons, but the 7000 series x3d only board that supports thunderbolt with dp in is an atx Asus pro art board.
I have an itx and 13900k lying around but I think running that on a 79mm cpu cooler wouldn't work very well
13900k could maybe work with PL1 limited to 125W, it would depend on your application and use case.
It might fit phisically if the GPU is not too tall, but it wouldn't work because it uses C19 socket. 1300W is basically the limit, regardless of the PSU size.
Holy Moses! I want one. This might actually save me from trying to cram Accelero Xtreme 3 into the case.
EDIT: just ordered
@Kreasu I think the only way to fit a 4090 into the case without breaking things is to use either one:
a) 4090 Founders Edition, it's the smallest air cooled 4090.
b) MSI's Waterforce RTX 4090. It's only a 2 slot AIO and if you use slim fans you will have enough space to route the cables around the pipes.
Yeah and there are few other 4090 that are 3slot thick so they also fit.