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post #2841 of 4392
Is putting a bottom fan better than 2 fans on the HDD cage??
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post #2842 of 4392
The bottom fan will help bring in more cool air - the 2 on the HDD cage really only aid in pushing air that's already inside. I would (without testing mind you) wager to say that adding one in the bottom location would have a greater effect overall on case air pressure.
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post #2843 of 4392
Quote:
Originally Posted by DJLiquid View Post
The bottom fan will help bring in more cool air - the 2 on the HDD cage really only aid in pushing air that's already inside. I would (without testing mind you) wager to say that adding one in the bottom location would have a greater effect overall on case air pressure.
Correct but for GPU temps you will most likely get better results with two 120mm fans on the back of the HDD cage.
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post #2844 of 4392
Quote:
Originally Posted by boredgunner View Post
Correct but for GPU temps you will most likely get better results with two 120mm fans on the back of the HDD cage.
When I had my cards on air I found that a fan on the top of the HDD cage and one on the bottom location yielded the best results for me.

I have since mounted a RX240 on the HDD cage and moved my cards to water... works even better
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post #2845 of 4392
Quote:
Originally Posted by DCP23 View Post
My air cooling experience so far with the ATCS 840:

After reading on this thread about switching off the front top fan, I gave it a try and behold! -- the CPU temps went down 2 degrees consistently.

Just as an experiment, I decided to try and switch off the back top fan as well, expecting the temps to jump. To my surprise, they stayed the same!!

After some more experimenting, I've found that in my case (pun intended), the following setup:

Front 230mm intake fan @ 100%
Back 120mm exhaust fan @ 100%
Top front 230mm exhaust OFF
Top back 230mm exhaust OFF
Top of the case covered with cloth to prevent airflow (!)

...lowered my CPU & GPU temps consistently for 3-4 degrees in comparison to all fans running at 100% and top of the case unobstructed.

Now I'm trying to figure out what it all means
What is the direction of the airflow in your heatsink? Bottom to top? Or front to back (right to left)?
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secundus
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post #2846 of 4392
Hey ATCS 840 fam, long time lurker checking in. Everything I have read from this thread has helped me build the PC I have now.

Just got my Lamptron FC-Touch installed.

post #2847 of 4392
Quote:
Originally Posted by flipv6 View Post
Hey ATCS 840 fam, long time lurker checking in. Everything I have read from this thread has helped me build the PC I have now.

Just got my Lamptron FC-Touch installed.

Looks good.

More pics please
Edited by SadSoul - 11/16/10 at 1:23am
The Liberator
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The Liberator
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post #2848 of 4392
Quote:
Originally Posted by mru View Post
What it all means: an ode to positive air pressure!
(Typically overlooked is the loss of pressure from the unused bottom fan.)
I'd love to use that bottom fan placement, but if I do so then the dust filter underneath the power supply will no longer be removable. Why would CoolerMaster overlook such a glaring design flaw is beyond me. As it is, I'll try to manage without the bottom fan.
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post #2849 of 4392
Quote:
Originally Posted by ehume View Post
What is the direction of the airflow in your heatsink? Bottom to top? Or front to back (right to left)?
I have to admit to using the Intel stock cooler at the moment The direction is therefore towards the motherboard.

I'm planning on replacing it with something else, but haven't decided on the model yet. Thinking about Noctua NH-U9B SE2, because it's supposedly very good yet much smaller and lighter than the NH-D14, and quieter too.
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post #2850 of 4392
Quote:
Originally Posted by DCP23 View Post
I'd love to use that bottom fan placement, but if I do so then the dust filter underneath the power supply will no longer be removable. Why would CoolerMaster overlook such a glaring design flaw is beyond me. As it is, I'll try to manage without the bottom fan.
Just a heads up...it depends how strong the fan is on the PSU. I found that my HX1000 doesn't pull in a whole lot of air since the dust filter never really collects much dust as I expected (big comparison with the amount of dust the 120mm fan collects). I'd say a couple of months of dust on the PSU filter is the same as about two weeks worth on the 120mm fan filter. This can vary though depending on if your case is on a desk, wood/solid floor, or carpet.

You'd be surprised how easy it is to clean...all I do is flip the case on its side for the PSU filter to be visible and blow a can of air through it. Dust on the filter is removed and any dust that has penetrated internally is blown out of the PSU's exhaust. Even easier for me now that I removed the fan grill as well.
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