The key feature is "HDMI 2.1 display stream compression", which is only present in very recent GPUs, and without which a computer can't output 8k at all. If it'

The key feature is "HDMI 2.1 display stream compression", which is only present in very recent GPUs, and without which a computer can't output 8k at all. If it's new enough to have that feature, it's fast enough to handle 8k no problem. I don't typically run videogames at 8k, but I'm sitting close enough that I want them centered in a ~4k window anyways rather than filling my peripheral vision.