"Huge" means different things in different contexts. A compiler optimisation that delivered a 4% increase in speed for a whole class of well-tuned C programs would be regarded as huge by people who follow compiler technology, but would not strike most users of computers as a big deal. I take it "huge" is meant in this sense of extraordinary within a class of potential improvements.
If you can accumulate a series of 4% improvements, then even the computer consumer will start to see the significance.
If you can accumulate a series of 4% improvements, then even the computer consumer will start to see the significance.