Yes, it is good for overclocking.
However I would recommend a Noctua NH-D14 it's quieter than the H105 alot cheaper and cools about the same with-in 1 - 3 degrees.
would support the NH-D14 - you also don't have to worry about leaks or evaporation with an air cooler... if you want more visual flair, look into the phanteks coolers as well...