I'm reminded of when I was architecting Mac graphics accelerators back in the early 90s - we put a lot of work into solid fills (profiling showed us that was wh

I'm reminded of when I was architecting Mac graphics accelerators back in the early 90s - we put a lot of work into solid fills (profiling showed us that was where quickdraw spent most of its time) ... in the end we were pushing 1.5Gb/sec into the frame buffer, the ram of the day just couldn't go any faster. What really surprised us was how much faster Excel went, it wasn't really our target, turns out that every time it updated the screen it redrew the background 5-6 times - drawing white over white - the actual content (the black pixels) were just noise in the graphics numbers