Why do CPUs benefit so much less from good cooling than GPUs?
So I'm a bit phobic of high temperatures in my system because I had a couple overheat and essentially become defective back in my prebuilt days. Therefore, now it's "the cooler the better".
Anyway, I delidded my 8700K recently because my 5.0 OC @ 1.35 V was hitting temps of 90+ under stress on all cores. It worked, except not entirely--now one core and the package are still close to 90 while the other cores hover around 70. Should I try reapplying the liquid metal?
Anyway, I'm considering getting into custom water cooling to replace my Noctua U14S and cool my GPU. However, I've heard that it might not make much of a difference at all. Why is it that GPUs can drop from 75 to 40 C under load when you switch from the stock (aftermarket) fan solution to a fully custom loop, while CPUs hardly seem better off? Is it worth the trouble?