You may need to click through to YouTube and play with the resolution settings (which go all the way up to 2160p60!) in order to get the full, bandwidth-choking effect, but here's Second Life displayed at 4K resolution. Redditor "tb_inuyasha_x" shot it with the Black Dragon viewer with some pretty impressive hardware (specs below). However, as he explains in the thread, frame rate varied hugely across Second Life:
"It was really depending on what sim I was in and how far I set the view range too… I would say some places, 8-25 FPS and others I could get 35 – 45 range… but, it was all still recordable."
Which is, well, yikes: 30 FPS is a not-bad framerate for an online world, so it's painful that FPS is still hitting below 10 in some places. Also as you'll see from shot to shot the visual appearance varies widely based on lighting presets, and frankly, the advanced age of Second Life's internal graphics.
Anyway, specs and sims shot below:









