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Intake or not? - Page 2

post #11 of 20
Quote:
Originally Posted by 50shadesofray View Post

the gpu is also located right under the top fan

i would set is an an intake, and create a fan control profile in speedfan tied to your gpu temp, causing the fan to ramp up as your gpu is stressed and heats up. I would keep the top fan as the sole exhaust. either way the case is not the best for cooling but you gotta work with what you got.

EDIT--misread your text that I quoted above. I thought the GPU was close to the side fan in question. Still though, I would have the side fan as intake and top as exhaust. At least that's what I would try first. You generally want to work with the natural flow of things and hot air rises...
Edited by nasmith2000 - 3/2/13 at 7:41pm
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post #12 of 20
Quote:
Originally Posted by 50shadesofray View Post

if i have a top intake and the two in the front as the intake with the 2 ones in the back as exhaust would i get lower temps.


no as hot air rises.
my setup is 2 lower front intake, 1 upper rear exhaust, and 2 top exhaust.
as a rule you should have more exhaust then intake as you need too
remove the hot air instead of having it just sit in the case.
if you have more intake fans then exhaust this will happen as the cool air coming in
gets warmed from all the hot parts and if you don't have enough fans too remove the
hot air then you will see hotter temps, this is why i have 2 in and 3 out.
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post #13 of 20
Quote:
Originally Posted by jlhawn View Post

no as hot air rises.
my setup is 2 lower front intake, 1 upper rear exhaust, and 2 top exhaust.
as a rule you should have more exhaust then intake as you need too
remove the hot air instead of having it just sit in the case.
if you have more intake fans then exhaust this will happen as the cool air coming in
gets warmed from all the hot parts and if you don't have enough fans too remove the
hot air then you will see hotter temps, this is why i have 2 in and 3 out.
Yes, hot air rises.. if you have no fans!! Fans change the rules with something called "forced airflow". Forced air flow is so much stronger than convection it doesn't take much of a fan to overcome convection flow completely.

Key is to use good fans with a reasonable static pressure so they can move air though the case against resistance. All of my fans are so called "cooler fans" because many so called "case fans" can't push enough air because they can't overcome the resistance of grill, filter, HDD cage, cables, etc (sometimes they can't even with push/pull)... which will build as much resistance as many coolers can.

Your "more in than out" is really true. It's really "exhaust pull a little harder than intake pushes" and creates a very slight vacuum inside of case. Problem with this is that vacuum sucks air in through all the small holes, switchs, lights, optical drives, USB sockets, etc and can plug them up with dust. Slightly "higher intake push then exhaust pull creates a very slight pressure inside of case so all the small holes, etc leak a little air out so dust is kept out.

What flows into case must flow out of case. Fans push in and as more air is pushed in it also pushes air out. You can't push in more air than is coming out or remove more air than is coming in. If you did your case would either be blow up like a balloon or get sucked flat.

ehume has a good thread about airflow and cooling
http://www.overclock.net/t/1041926/how-to-decide-on-a-case-for-air-cooling-warning-pics
Edited by doyll - 3/3/13 at 5:45am
post #14 of 20
@ doyll, I was hoping you would see this thread as in the past I have read lot's of your post
on case air flow and you have allways had good ideas and good points on the subject.thumb.gif
glad you came in and gave some of your knowledge.
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post #15 of 20
Thanks for the thanks. thumb.gif

Didn't know much of anyone listened to me. biggrin.gif
post #16 of 20
Quote:
Originally Posted by doyll View Post

Thanks for the thanks. thumb.gif

Didn't know much of anyone listened to me. biggrin.gif

I have allways liked your cooling tips and ideas.
but if you remember I was the smarty pants that
backed up Noctua hardcore on the Noctua thread a few
days ago, so I guess you could say I am a Noctua fanboy
from what I have read about the term fanboy.biggrin.gif
hope you didnt take in the wrong way though
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post #17 of 20
Yeah, you did overreact and were slightly obnoxious.. but not even as much as a mosquito. biggrin.gif

I wasn't saying Noctua were in any way bad. Just saying to take any manufacturer's specs with 3+ grains of salt. Our forum specialists are way more accurate.. maybe not as fancy but give us the straight facts.
Edited by doyll - 3/3/13 at 9:39am
post #18 of 20
Quote:
Originally Posted by doyll View Post

Yeah, you did overreact and were slightly obnoxious.. but not even as much as a mosquito. biggrin.gif

I wasn't saying Noctua were in any way bad. Just saying to take any manufacturer's specs with 3+ grains of salt. Our forum specialists are way more accurate.. maybe not as fancy but give us the straight facts.

yeah I do come across as obnoxious sometimes but mostly it's just
kidding around with smart a*% replies just having fun.
I apoligize for that.smile.gif
I am very impressed though with my 4 Noctua fans as
every fan I have tried drove me crazy they were so loud.
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post #19 of 20
No need to apologize but thanks. Just noticed you have a 970. Great CPU! Not many others out there that can keep up with new top chips out there now. 3rd generation and still going strong! Finding good mobo's is the problem now... mobo's that keep up with sata, USB, etc. last time I check the hex 9xx were still in the top 10-15 cpu's.Have you tried any of the TY-140 series? I can barely hear them at 950-1000rpm on my TC14PE cooler in the open on my test bench in a very quiet room.. and that's keeping my 980 and 920 below 47c in a 22c room running 3 rendering sessions at same time.. 100% CPU load.. Solid straight line on graph.. and even HWM stumbles to keep up on occasion. biggrin.gif Just enough to think I might be hearing them. I am setting 6 feet away. wink.gif

Edit: I really need to get some help... Help to overclock the beasts that is. Trouble is it does so good stock I don't need to overclock it. biggrin.gif
post #20 of 20
yeah i dont overclock my 970 as when i did it really didn't make a big enough difference.
I am going to see what the new Haswell has to offer and if not much I want a Sabertooth X79
2011 socket so I can have another 6 core. I run a couple programs that need it as I know a 6 core
isn't used fully for gaming.
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Old X58
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