I only have experience with OpenStep 4.x on PC hardware, but I feel like you may be vastly underplaying the speed gain from then to now, unless NeXTstep on blac

I only have experience with OpenStep 4.x on PC hardware, but I feel like you may be vastly underplaying the speed gain from then to now, unless NeXTstep on black hardware really felt that much faster than on one of the blessed 486 configurations. I mean, NeXT was not known for speed, and this was the age of slow spinning rust or, for NeXT, even slower MO drives. I remember NeXTtime - it was essentially a prototype tech demo that could play some -- only some -- QuickTime movies in a very small window. I find it unlikely that it was significant in the deal. IIRC the Apple tech team wasn't that impressed with the interrupt latency of Mach, which later had to be fixed at Apple out of necessity.