Thanks. Looked for that in the article and couldn't find it.

What are the GPU capabilities?

Likely none? I believe they just don't give graphics out to non-x86 servers. If you mean GPU as in SIMD processor, I believe this is supposed to have it in forms of massive SIMD capabilities on CPU itself.

These things feel like, if they have any video output, it would be a single VGA port for if you REALLY need to get a signal from it.

x86 servers are like that. PC/AT memory map have the range for VRAM, but RS232C is optional, so you can't just have the RS232C and not VGA on an x86 as its debug/recovery interface.

Platform designers can make up their own memory maps, so non-x86 ones can just have UART I/O buffer and hardware interface wired up in whatever address you want and forgo VGA.

I have a 32bit SPARC machine on a shelf I got from a junk hardware shop, it has a DB25 for console. It's ok.