Most developers have a sense that 99%+ is too full for memory and CPU cycles. But it is much less clear where to draw the line. Is 95% too full? How about 90%?
As it turns out, there is very little guidance on this area. But performing some what-if analysis with some classic software cost data leads to a rather startling conclusion:
and you are making fewer than 1 million units
then you should get more memory and a faster CPU.