fine tuning is over-clocking. use a search engine it is easier.
i used "ivy bridge overclocking guide" in google and got lots of material.
using a water-cooling kit on a 4GHz over-clock, cool.. on an ambient 29° and
1.15-1.29v vcore load can range from 42°-65°. its a bit overkill, but easily done.
you might want to consider staying on air cooling for 5°-8°. since you are not
for more clock speed.
airdeano