Computer Water Cooler What Is The Approx. Temp. Decrease Should I Expect If I Water Cooled My Computer?

What is the approx. temp. decrease should I expect if I water cooled my computer? - computer water cooler

I think that spending $ 200-300 for dangerden cold water on my CPU. At what temperature (should wait 5 to 10 gr. Relegation)? Is it worth it?

I already have an after market cooler (Arctic Freezer Pro). I like to do extreme overclocking a hobby, not a faster computer.