Cvdasf :
you answered very well thank you
one last question. I've started downloading some games of mine through steam and am watching a youtube video at the same time.. just noticed my temps are now in the 40's. Is that normal sense its not really under a load? almost scarred to play something like watchdogs. :/
Haha I have the same tendency to monitor temperatures like crazy after a cooler installation. If it's any consolation:
1. Your CPU will run hotter right after you apply new thermal paste. This is just a matter of burn in, as the paste "settles." After the burn in, you'll have better temperatures. (When I installed my 4790K, I also had around 30-35C idle with a similarly performing cooler right after installation. After about a day, idle temps dropped to 27-30C. For reference, I had ~25C ambient temps.)
2. I also get around 35-40C when I'm watching videos and running some background apps. I wouldn't worry so much about that!
3. It's
very hard to overheat and damage your CPU if you aren't overclocking. So even if something is wrong, there isn't much risk as the CPU will throttle or your computer will shutdown before damage is done.
Here's what I do. Before running anything intensive, I like to help along the burn in period with some stress tests. Heat up/cool down cycles accelerate the process. They also will reveal if you have any heat issues. If your CPU can survive Prime95, it'll survive any game! For reference, stop the test if your temps exceed 80C. For a stock 4790K, you shouldn't see temps that high with an H100i.