which direction should i have my fan blowing

[anonymous6366]

It's a new system. (no dust)

Also, what is the best way to apply the AS-5? I have seen a bunch of different opinions on this.

This article is very informative on the topic of heat transfer n such
http://www.benchmarkreviews.com/?option=com_content&task=view&id=170&Itemid=1

 

[Calder]

The Blackhawk Ultra does not require 18mm

Hi, I think the first site that reviewed the Rosewill Blackhawk Ultra stated it required 18mm and then everyone else copied off of it when they reviewed it. I tested the tray with a 120mm / 25mm thick Enermax Magma and it fit fine - though you do have to use care putting the panel back on. It did not contact the board. I am running a Gigabyte UP4 2011 socket, with a Hyper 212 EVo cooler that does not require a back bracket. I ordered an NZXT LED 120 / 25mm that I intend to use in the space permanently and also ordered a filter. I intend to point it at the board.

If you have a back bracket on your board your results may be different than mine, but you may also be able to find higher standoffs. A 120mm fan should fit right into the huge cutout on the board tray.

Just test with any 120mm / 25mm fan you have. It should work - just be careful moving the panel because it fits slightly into the cutout.

 

[de.das.dude]

not worth it.
even if you put a fan there, it will get noisy from the obstruction. and if its not noisy, its nearly not pulling enough air to be useful.

i think its just there to neutralize the air pressure in the case.

 

[Calder]

25mm fits and for me, the extra fan is well worth it

There are test results online for under-CPU fans that show temperature reduction. I'm not interested in a debate - I'm just trying to clear up misinformation, because initially I had the same question as the OP and then read several review sites that all said you needed 18mm. However, a 25mm fan should fit. There are plenty of strong fan options that are not that noisy (and every enthusiast case has fans blowing on obstructions - for example stacked graphics cards). The case is designed, specifically, with the ability to place a fan there. The available slot is fully vented.

Whether or not someone wants to is totally up to them - just be careful and watch your clearance from the top. You will need a strong flashlight to see the gap.

 

[de.das.dude]

the CPU temp reduction is probably because the motherboard temperature sensor is around that region.