CPU Cooling and what to do with case fans?

[markPrzy]

Firstly, black friday deals were pretty sweet, snagged the Sandisk Ultra ii ssd 480 gb ssd(never had an ssd before) for 95 bucks and best buy had half off everything logitech so I got a g710 for just 50 bucks.

But I have a 4790k and when finals week is over I'm planning on doing a little overclocking, nothing crazy, and I ordered a Hyper 212 Evo for it since the stock seems pretty crappy. I also ordered two Cougar case fans, hydraulic bearing, they were 11 bucks a piece including the rebate.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835553012&cm_re=cougar_blue_led-_-35-553-012-_-Product
They don't seem as cheapo as other fans for 10 bucks and 5 star reviews.

What I really want to know is what I should do with my case fans. This is my first build and my s31 urban case has two fans in it already, one 120mm in the rear for exhaust, and another in the front for intake.
There are places for fans on the bottom as intake, another in the front as intake and the top as exhaust. What would be a good setup? Should I use one of the fans as my cpu fan on top of the 212 evo heatsink and just run 3 case fans? Or should I run 4 case fans and leave the 212 evo as is.

Also, would I need a fan controller or just plug them into the motherboard like the ones included in the case. I don't know much about fan setup yet, and realize that cooling is pretty important. I don't have much going on in my rig but I feel like its something I should learn about because I get the feeling that I'm just going to keep buying parts and case management and cooling will be that much more important.

 

[rolli59]

The 212 as is and mount 1 as exhaust at the top and add intake in front! Plug into motherboard if you can but if not directly to Molex on PSU works.

 

[geofelt]

The objective of case fans is to supply enough fresh air to cool your parts.
A 4790k runs at 4.0/4.4 stock. You really do not need to do anything extra.
If you scored a very good chip. that 4.4 turbo might reach 4.6 or 4.7
The main reason for the hyper212 is for noise. The stock cooler small fan is noisy when it spins up.
When overclocking, do not let the vcore go past 1.30. You will usually reach the vcore limit before you reach the thermal limit which is about 85c for a stress test.
I like OCCT for stress test.

Now, a hyper212 has an 120mm fan, so you should supply intake that is equivalent your existing 120mm fan.
Your graphics card is the real heat generator. For a single card, a second front 120mm intake should be sufficient.
If all of your intake is in one place, behind a washable filter, you will have a clean case. Do not worry much about where the air exits. A single 120mm exhaust is sufficient to give the airflow direction to the rear exhaust.
If you want, experiment with using the bottom as a second intake.
Your fans have 3 pin connectors. They should plug into the motherboard if you have sufficient headers.
A good motherboard will have a bios that can monitor and adjust fan speeds;

Do not worry if parts get a bit hot, they are built to tolerate heat.
I would expect your cpu idle temperatures to be 10-15c. over ambient.
Perhaps 40c. over ambient under load. It takes 100d to throttle the cpu.

 

[markPrzy]

The 212 as is and mount 1 as exhaust at the top and add intake in front! Plug into motherboard if you can but if not directly to Molex on PSU works.

Forgot about Molex haha! Good call on that one, I know of 3 plugs for fans but don't remember seeing a 4th on my mobo. so thanks!

 

[markPrzy]

The objective of case fans is to supply enough fresh air to cool your parts.
A 4790k runs at 4.0/4.4 stock. You really do not need to do anything extra.
If you scored a very good chip. that 4.4 turbo might reach 4.6 or 4.7
The main reason for the hyper212 is for noise. The stock cooler small fan is noisy when it spins up.
When overclocking, do not let the vcore go past 1.30. You will usually reach the vcore limit before you reach the thermal limit which is about 85c for a stress test.
I like OCCT for stress test.

Now, a hyper212 has an 120mm fan, so you should supply intake that is equivalent your existing 120mm fan.
Your graphics card is the real heat generator. For a single card, a second front 120mm intake should be sufficient.
If all of your intake is in one place, behind a washable filter, you will have a clean case. Do not worry much about where the air exits. A single 120mm exhaust is sufficient to give the airflow direction to the rear exhaust.
If you want, experiment with using the bottom as a second intake.
Your fans have 3 pin connectors. They should plug into the motherboard if you have sufficient headers.
A good motherboard will have a bios that can monitor and adjust fan speeds;

Do not worry if parts get a bit hot, they are built to tolerate heat.
I would expect your cpu idle temperatures to be 10-15c. over ambient.
Perhaps 40c. over ambient under load. It takes 100d to throttle the cpu.

Yea man, this stock fan is so loud its ridiculous which is my main reason for hyper 212 evo, you are right there. And yeah I'm just overclocking to try it, and so I don't waste the functionality I paid for, even though I got the CPU for cheaper than the non-k version, best buy let me price match microcenter for 280 luckily but still I wouldn't want to see that functionality go to waste, so just a little something something. So basically rock one of those fans on the front for intake seems to be the general consensus, and do whatever with the other one, but yeah I can figure out the bios, I know my mobo has all that stuff, but what about Afterburner or other software, stick to the bios settings or could I use something like that?

 

[geofelt]

MY approach for a conservative oc is to set everything to default.
Then gradually raise the multiplier from the stock 40 to whatever.
Test with occt and monitor your vcore.
Stop when vcore gets to 1.30v.
Occt will stop the test at 85c.
I like occt because it uses the kind of instructions you might; not just those that raise the temperature.

 

[markPrzy]

MY approach for a conservative oc is to set everything to default.
Then gradually raise the multiplier from the stock 40 to whatever.
Test with occt and monitor your vcore.
Stop when vcore gets to 1.30v.
Occt will stop the test at 85c.
I like occt because it uses the kind of instructions you might; not just those that raise the temperature.

ok, thanks, i'll be sure to check it out!