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H70 - Blow the hot air inside? - Page 3

post #21 of 25
If you want your radiator to work the best you want the coolest air to enter.

According to basic heat transfer, the method of heat transfer for a radiator is convection.

The rate of convection heat transfer depends on several factors, your air speed, the temperature difference between your coolant and your fins and several other factors that can't be changed in your h70 setup such as material type and coolant type (air) that affect the h value.

If you blew air at 100 degrees Celsius through the fins that were also at 100 degrees Celsius no heat transfer would occur.

However, where the air is going to depends on what your overall goal is.

I'm only ocing the cpu, the ram and everything else isn't as important so I have my h70 as an intake.

//edit
Take into consideration though, I have a 200mm fan for exhaust on top of my case.
Edited by dcyli - 4/20/11 at 6:54pm
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post #22 of 25
Thread Starter 
Quote:
Originally Posted by age_ruler1 View Post
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

Good luck!
Hey, thanks for your input.

I understand the hot air principle but that doesn't apply quite well if you're inducting it. Therefore you can't guarantee that the hot air wont "touch" the other components if I am inducting it from outside to inside the case, even considering that you have a couple of exhausting fans on the top.

Let say the air from outside is 20 Celsius. It gets pulled inside the case passing the radiator. After the radiator, lets say that the air gets as hot as 35 Celsius. No matter how the exhausting fans try to pull the hot air out, the air blown by the H70 fans will vortex inside the case and will pass through the other components...

Sorry but I am not convinced by Corsair's recommendation...
post #23 of 25
Thread Starter 
Quote:
Originally Posted by dcyli View Post
I'm only ocing the cpu, the ram and everything else isn't as important so I have my h70 as an intake.
Yep, that's the best solution for your scenario
post #24 of 25
I get cooler temps on my h70 when I set it to intake cool air
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post #25 of 25
Thread Starter 
Installed the H70, had a few technical problems with my RAM (one module crapped itself in the process), temperatures @ stock speed (Q6600 2.4Ghz) 20 Celsius.

Amazing, I can tell I'll be able to push this baby very far...

Luckly the RAM is Corsair (Lifetime warranty). I think it broke when I removed it, not sure why I have done this operation so many times... I didn't even drop it.

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