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too much positive pressure?

post #1 of 10
Thread Starter 
I’m building a new rig with Silverstone tj08-e and wondered what best configuration for my three hard drives and large Prolimatech Megahalems heat sink would be?

there’s no way my Noctua 120mm Fan is gonna fit on hard drive side of cooler and I already have a Nexus BASIC D12SL-12 120mm fan as an out take. What would happen if everything blew inward. My video card is a Radeon HD 6450(small). If heatsink fan is directly adjacent to outtake fan won’t they work against each other?

What if rear case fan blows in? 180mm intake plus 120 mm intake on rear shooting straight into heat sink fan (no out take). Would that type of positive pressure be effective, all the heat hypothetically moving out the grills near vid card?

this pic is from silentpc review
post #2 of 10
I'd go for it, looks like your best option. I have my arc midi running positive pressure with 5 intake fans. lots of heat /air comes out side vent.Unless you can move that drive cage forward by removing the front intake, changing it for a slimmer fan
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post #3 of 10
Thread Starter 
did i mention a seasonic fanless psu on top? it's an audio recording rig. will that thing take a beating with a setup like this?
post #4 of 10
i don't think so, if anything it should get more air going through it.
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post #5 of 10
Quote:
Originally Posted by tonegiver View Post

did i mention a seasonic fanless psu on top? it's an audio recording rig. will that thing take a beating with a setup like this?

AP181 is NOT the right fan to use for an audio recording rig biggrin.gif definitely not a quiet fan. i had to use a fan controller to drop it down to 500RPM for the noise to be "acceptable" to my ears.

how many HDD are you running? why are you even using the HDD cage? you should just have 1 large storage drive, and a SSD for OS/application/games. you can mount the single mechanical drive on the FDD bay. and there are plenty of places you can put SSD's. you should not have to even deal with the HDD cage so best to just remove the cage.

as for airflow pattern, you should maybe look into a FM181 or even the phobya g-silent 18 instead of the AP181 for reduced noise level. i wouldn't bother with an exhaust fan since that will simply add noise and not really provide any benefit. remove the HDD cage, and put a push fan on that cpu cooler and you should be fine.
post #6 of 10
why are you using a mechanical drive in this?

use an SSD if possible and that will solve the issue, if you must use a mechanical drive then put it in the slot underneath the actul cage. Putting it in that slot should allow you to use a fan on the front of the heatsink
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post #7 of 10
i think people over look positive pressure setups... while not the BEST, it is good for certain setups... in particular when you want to force air flow over a component that doesn't have a fan. like you said your PSU is fanless so positive pressure will actually move MORE air over it than a balanced setup would
post #8 of 10
Quote:
Originally Posted by Covert_Death View Post

i think people over look positive pressure setups... while not the BEST, it is good for certain setups... in particular when you want to force air flow over a component that doesn't have a fan. like you said your PSU is fanless so positive pressure will actually move MORE air over it than a balanced setup would

we aren't overlooking it. by design TJ08-E was engineered as a positive pressure case biggrin.gif don't need to add any more fans because the AP181 is already providing plenty tongue.gif what people need to realize is you don't have to have ALOT of pressure to benefit from positive pressure. VERY slight increase over ambient is all you need.
post #9 of 10
right right! my 650D is positive pressure as well
post #10 of 10
Quote:
Originally Posted by psyclum View Post

we aren't overlooking it. by design TJ08-E was engineered as a positive pressure case biggrin.gif don't need to add any more fans because the AP181 is already providing plenty tongue.gif what people need to realize is you don't have to have ALOT of pressure to benefit from positive pressure. VERY slight increase over ambient is all you need.



Sorry, but I had to.
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