> > > Of course that only applies to > > > the emulation of very recent systems. > > > > It applies even to systems that we don't think of as "very recent". I was reading > the > > Nocash documentation on the PS1 just the other day, and I seem to recall that clear > > operations on the PS1's GPU will clear VRAM in blocks of 32 bytes per cycle. That's > > something that only really became viable on modern CPUs with the introduction of > AVX > > extensions. > > a single cycle on the PSX I'm guessing is a longer period of time as the actual > clocks are lower?
PSX GPU clock is 53.693175 MHz. So 32 bytes per cycle works out to 1638 megabytes per second, or 27 MB / 60 Hz frame. That's definitely something even on modern hardware.