Depends on the platform, IMHO. for platforms with separateIt is relevant. It's 2 times slower at least.
floating point boxes ('units') such as the alpha (maybe newer pentiums ?)
Apple's G4 and G5 have a really nice vector unit.
the float ops *could* be done in parallel.
Yes, but the same thing would be true for ints.
I'm all for floats. Why are high end GPU (for instance from nvidia) and image file formats (for instance OpenEXR) starting to use floats?It's just an engineering decision, I guess.