Help Needed: High CPU Temperature

Try moving 1 intake fan to the back as an exhaust fan. It isn't a very good idea to have more intake than exhaust. Maybe even have just 1 intake and 3 exhaust.

Whenever changing thermal greases, you'll want to make sure both the heatsink surface and the CPU heatsink shield have been cleaned thoroughly with acetone/ isopropyl alcohol. If the surfaces aren't cleaned well, the result will be higher CPU temps due to a weaker bond between cooling devices.

Agree with the above about switching fans around in the case for better exhaust.

The Cooler Master Hyper 212 is a low end air cooler, but it typically works pretty well.

Idling at 50 is quite warm for a Devils Canyon proc. My i7 4790k is OC'ed to 4.5GHz and idles in the 20's (C). It only hits 50C when under load. My ambient temp in my office is about 21C or around 70F. I was just gaming for over an hour playing BF Hardline and RealTemp shows 51/49/51/50 were my high temps.

Can you possibly cool your room a little better. Why is you room 30C? YIKES that's a warm 86F- not pleasant for people!

What graphics card do you have? You didn't list one. This is typically the biggest heat producer in your rig. I have a Corsair Air 540 case and have my two front fans set as exhaust not intake. You can hold your hand in front of them under load and feel the nasty heat being expelled from the inside of the case (Corsair AF 140mm fans).

I used MX-4 paste and only a small dab. My cooler is a Corsair H80i and it seems to work great.

But if youre idling at 50C something is wrong.

I would start here:

1) Cool your room. You cant expect to have a cool running rig in a hot room. You are fighting a losing battle there.

2) Re-apply thermal paste and clean off old paste REALLY good with >90% Isopropyl Alcohol. I personally don't care for Artic Silver - but your choice. MX-4 seems to give me better results.
Make sure 212 is mounted tightly and properly. Very important. Make sure its fan(s) are working properly.

3) Use RealTemp or CoreTemp to CPU monitor temps.

4) You have a great case. Experiment with exhaust fans in front - intake in back, and see what happens. It could improve temps. The only way to tell is to flip them around and check. Or add fans at top of your case. Intake front - exhaust out back and on top.
http://www.bing.com/images/search?q=nzxt+h440&view=detailv2&&&id=6085CE77B5F0CACFA5EC6C72E5531F476C19741F&selectedIndex=650&ccid=xs%2bRAguy&simid=608053484313317207&thid=JN.x9aXBtA9y0Ka8uoLiKswqw&ajaxhist=0

5) Make sure you are cooling your GPU adequately with AfterBurner or EVGA Precision app.

6) Consider a better CPU cooler. If you are stuck in that hot room, this may be your best bet after re-applying new paste (and maybe adding fans on top). You may just be giving the 212 more than it can handle.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835181031

Update us with what you do.

Those temperatures are very high for a non-overclocked CPU. My overclocked i5-4690K runs at 35 degree celsius with 25 room temperature and hits 75 at full load. My cooler is Arctic Cooler Freezer i30.

You should check CPU fan rpm, whether all case fans are working and if the cooler is properly seated on the CPU , sometimes the push-pins doesn't "click" well, resulting in bad contact. Coolers with screws + backplate don't suffer from bad thermal contact.

I just solved my heat issues on my i7-4790k. I have the Corsair H80 (not H80i) and a Gigabyte UD5H-BK. My problem was that the cooler wasn't pulled down far enough on the CPU to ensure good contact and heat transfer.

Also, what are your voltages at? You might try manually setting them to the stock values so they don't fluctuate as much. I set mine to 1.1V and 1.8V (VCORE and VTT) and now my voltages are much lower when at load. But it still manually adjust down to about 800mV when at idle and I get about 29-31C at idle (25C ambient).

Whereas before I was getting high 80s to low 90s immediately when running Prime 95, now I'm getting solid high 70s to low 80s. Running 3DMark I'm in the high 50s/low 60s.