Hello

I am planning to buy a case like this:

http://www.corsair.com/en/obsidian-series-450d-mid-tower-pc-case#javascript:void%280%29;

and a liquid cooling system like this:

http://www.corsair.com/en/hydro-series-h100i-extreme-performance-liquid-cpu-cooler

and I wonder if they can keep an Intel i7 6700K processor in good temperatures while the processor processes data from BOINC projects with 7 of its 8 cores. With a cooling system like this

http://www.coolermaster.com/cooling/cpu-air-cooler/hyper-212-evo/

the processor exceeded 80 degrees processing data of BOINC projects and that temperature is very high, so i want to ask if the new case and the new cooling system will be able to keep the processor cooled.

Thank you.

If you are talking 80 degrees Fahrenheit that's perfectly fine, anything under 100 degrees is normal operating temps for any CPU. I've got file share boxes that have been running 120 degrees 24-7 for over 8 years and still run fine.
And that would all be relevant to ambient temps. If you in a nice cool house 70 degrees or so, any good quality cooler should do providing good case cooling is also addressed.