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H70 - Blow the hot air inside? - Page 2

post #11 of 25
The difference between exhaust and intake with the H70 is around 1-2C depending on what the airflow in your case is like. I have found with my setup I get better temps with my push-pull as intake because I have 2 x 120mm on TOP exhausting. Try it both ways, you may be surprised... the fresh air from outside the case can make a big difference if your ambient is low enough.
post #12 of 25
Thread Starter 
Quote:
Originally Posted by liljoejoe54;13208782 
I had mine mounted in the back of my case and had the fans set as an intake to pull cool air from outside the case. I had exhaust fans at the top of my case pushing out the hot air. my i7 950 never got above 50c even under 100% load for 2 hours with Prime95. With that said, I honestly dont think it matters which way you set it as long as you have good air flow in your case.

Good point dude!

I guess looking at my PC case, is seems more adequate to use my H70 as an exhaust because it can pull outside air from all sides of the enclosure (all sides have a thin film that works as a filter with the metal coverings being all perforated with small dotted wholes).
post #13 of 25
I have always had it so it blows out the back I would never want to pull in all that hot air in my case.
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post #14 of 25
If your using it on the rear 120mm (corsair recommendation) your going to pull a ton of dust and clog up that rad quickly. Rads should always exhaust. With the H50/H70 its not a big deal and the temp differences are insignificant. I would never recommend an RX360 pulling cold air from a case. The heat output of a triple rad of that size is insane.
post #15 of 25
Quote:
Originally Posted by nickbaldwin86;13208922 
I don't understand why anyone would blow hot air from a rad into their case on to the hardware...

I always ran my H50 with two fans as exhaust, and it worked great.

Exactly. One of the main benefits of watercooling is to get rid of heatsinks that generate hot air inside the case. By relocating the heatsink (rad) to a location where the hot can be blown out, keeping case temps down and all the hardware cooler.

If your case temps are that much hotter than ambient that they will change CPU temp compared to room air, you have a problem that will only get worse by blowing CPU heat back into the case.
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post #16 of 25
Quote:
Originally Posted by KBcobra;13208980 
If your using it on the rear 120mm (corsair recommendation) your going to pull a ton of dust and clog up that rad quickly. Rads should always exhaust. With the H50/H70 its not a big deal and the temp differences are insignificant. I would never recommend an RX360 pulling cold air from a case. The heat output of a triple rad of that size is insane.

Right.

Ask anyone with a custom water loop which way the air should go. Always out, I've never seen a custom setup that sucks air into a case.
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post #17 of 25
Thread Starter 
Quote:
Originally Posted by KBcobra;13208980 
I would never recommend an RX360 pulling cold air from a case. The heat output of a triple rad of that size is insane.

I am sure it is. Just checked a youtube video and it seems to be insane as you said hehe.

I fear leaks with that kind of system though.
Edited by helipilot - 4/20/11 at 7:13pm
post #18 of 25
Either way should be fine. If you have good, and properly moving airflow, in your case, you will not notice any other components get warm by doing intake. And your CPU will get optimum cooling. If you dont have a high airflow case, you should probably go exhaust, but your cpu temps may suffer a little. It really all comes down to your case and fans and their airflow.
post #19 of 25
Hello,
Well I have been planning to buy H70 for a while too. And I thought the same as you. And I'm sure setting it as INTAKE works better... Why? Well Air hots ALWAYS tends to go UP! So think, the radiator of H70 is at the very top if its installed vertical, It can't go any higher then that. So HOT air is gonna go UP... If you configure the top fans of your case to EXAHUST the hot air is gonna be exahusted as soon as it leaves the radiator giving the CPU the coolest air from out side. Ok, You might ask: "What about the GPU, RAM and all the other components of my system? Well.. As I said before, hot airs tends to go UP... all your hot air is going UP! hot ir wont go down, therefor NEVER touch ur other components. The GPU and RAM are going to be the very same temps if the radiator is set as exauhst or intake. The diferennce is, As Exahust, the radiatior is taking HOT air from inside your case. As Intake it takes Cool air from out side. without afecting your other components... That's why Corsair recomend to set it as Intake.

I hop this clears your doubt. Its just simple physics smile.gif

Good luck!
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post #20 of 25
Quote:
Well I have been planning to buy H70 for a while too. And I thought the same as you. And I'm sure setting it as INTAKE works better... Why? Well Air hots ALWAYS tends to go UP! So think, the radiator of H70 is at the very top if its installed vertical, It can't go any higher then that. So HOT air is gonna go UP... If you configure the top fans of your case to EXAHUST the hot air is gonna be exahusted as soon as it leaves the radiator giving the CPU the coolest air from out side.

Very good point. SO the hot air coming in should get sucked up immediately out the case and away in thin air.
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