For some reason I remember 83Hz being the highest refresh rate supported by my XGA CRT, but I think it was only running at SVGA (800x600) in order to pull that rate.

Some demos could throw pixels into VRAM that fast, and it was wild looking. Like the 60Hz soap-opera effect but even more so.

I still feel that way looking at >30fps content since I really don't consume much of it.