[hardware2win]

There is a side effect like cpu temperature increase

If I put my leg on my desktop tower then I may feel enjoyably warm or if I put some chocolate on my laptop then it may start melting

Also fans will be louder

[thfuran]

None of that is behavior according to the java (or any sane) language specification, so it can be optimized out of existence.

[hardware2win]

It is written in other, more general "specification" called physics

Computers arent purely abstract, they exist in real world and are affected by it, so lets do not try to pretend otherwise

[The_Colonel]

Not sure if being facetious, but FWIW you can't really rely on these. Next year you'll get a much faster CPU and memory and the timing will be all different. Or, tomorrow you run it while encoding video on the CPU which eats 99% of CPU, and it's hundred times slower.

[funcDropShadow]

Obviously, there is an xkcd for that: https://xkcd.com/1172/