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post #541 of 2110
I have a question. I have an H80 that I got for Xmas and I am planning on getting a new case. It will more than likely be a Corsair 500r (maybe a 650d....maybe). If I wanted to do a case with postive pressure and still have decent cooling for the rad on the H80, how do you think the best setup would be for this?
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post #542 of 2110
Quote:
Originally Posted by chinesethunda View Post

true but then you are giving the GPU hotter temps to work with which will in turn make the GPU run a bit hotter

Well, the GPU cooler generally takes it's air from the bottom of the card. This air is generally supplied by front/bottom intake fans.

The "warm" air will be blowing only on the back side of the GPU, and generally that side is really hot and without any sort of cooling.
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post #543 of 2110
Quote:
Originally Posted by Deni View Post

Well, the GPU cooler generally takes it's air from the bottom of the card. This air is generally supplied by front/bottom intake fans.
The "warm" air will be blowing only on the back side of the GPU, and generally that side is really hot and without any sort of cooling.

Lower temps with positive pressure setup makes more sense to me. All the air in the case is being forced out the back pane and rear exhaust vents. The setup you mentioned would be circulating more hot air inside than pushing it out. I have tried many different setups and found temps are best with positive pressure.thumb.gif Do you currently use the setup you mentioned? If so maybe you can run some tests with top/down vs front/back setups on your cpu cooler? Reality is so much more fun than speculation! biggrin.gif
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post #544 of 2110
Quote:
Originally Posted by solsamurai View Post

Lower temps with positive pressure setup makes more sense to me. All the air in the case is being forced out the back pane and rear exhaust vents. The setup you mentioned would be circulating more hot air inside than pushing it out. I have tried many different setups and found temps are best with positive pressure.thumb.gif Do you currently use the setup you mentioned? If so maybe you can run some tests with top/down vs front/back setups on your cpu cooler? Reality is so much more fun than speculation! biggrin.gif

The setup I mentioned has positive pressure.

I cannot try this setup as I have a cheap old case with top mounted PSU.

This is a simple draw of my setup:

413

Side mounted and bottom mounted fans have filters. Front mounted don't have filters but generally the front fascia acts as one.

Deni
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post #545 of 2110
Very nice. thumb.gif For me a front to back oriented airflow pattern seems better, but I would love to see your config put into action. If you are going for a positive pressure setup then you would not need that rear exhaust. biggrin.gif If you haven't already try removing it and see how it effects temps. I noticed no difference in my case when I did this and lowered the total noise level as well.tongue.gif
Edited by solsamurai - 12/30/11 at 11:29am
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post #546 of 2110
Im so sad. ordered 6 ty-140's and none of them fit frown.gif

off to return them and get a true 120mm fan. What do you guys think about this: http://sitesearch.outletpc.com/?page=1&query=bitfenix+spectre

They are on sale!

stats:
Current: 0.06 A
Speed: 800-1000 RPM
Air Flow: 60 CFM
Noise: 18 dBA
Air Pressure: 1.93 mmH2O
Bearing Type: Fluid Dynamic Bearings (FDB)

seems like a win? Any other suggestions on a quiet 120?
post #547 of 2110
bump

People really need to see this if they haven't already.

One thing I don't think ehume explained yet is why you shouldn't have a fan over the heatsink adding air into the flow. IMO it should be pretty obvious but if you don't know, it will blow air onto the gfx card by partially redirecting the airflow. You must add the air before it is heated. Adding that top intake over the heatsink is like adding gasoline while you're driving instead of before.
Edited by HybridCore - 1/9/12 at 6:37pm
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post #548 of 2110
Quote:
Originally Posted by HybridCore View Post

bump
People really need to see this if they haven't already.
One thing I don't think ehume explained yet is why you shouldn't have a fan over the heatsink adding air into the flow. IMO it should be pretty obvious but if you don't know, it will blow air onto the gfx card by partially redirecting the airflow. You must add the air before it is heated. Adding that top intake over the heatsink is like adding gasoline while you're driving instead of before.

Well ehume suggested me to use a top 200mm intake with my coolermaster haf922 case. it does have a portion that is blowing directly over the heatsink.
post #549 of 2110
Quote:
Originally Posted by kevindd992002 View Post

Well ehume suggested me to use a top 200mm intake with my coolermaster haf922 case. it does have a portion that is blowing directly over the heatsink.

Well, there's only one top intake and from the looks of it will only overlap part of your heatsink. I mean directly blowing down onto it so all of the airflow is redirected.
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post #550 of 2110
well, it might work for some people and not others, from my experience if i have the top intake while my computer is on my dresser or something, it doesn't do anything, but if i have it on the ground it helps with temps because its cooler, so each person has to test for themselves to see if it works for them
   
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