Corsair 350D Fan Configuration

[YoDa_95]

Alright so I have a build finalized but I have a BIG confusion in fan placement in a Corsair 350D case. Im going to use a Corsair H80i cooler and also decided to go for a full five fan configuration i.e, two in the front, two on top, and one at the back but H80i has two fans?!?
1) Can someone suggest the best cooling configuration.
2) Which fans to use since I'll be getting from Corsair. I have seen AF and SP...120 and 140 configurations. So which fans to be placed where in terms of intake or outake.
3) I also want to create a positive static pressure.

 

[M0j0jojo]

If you want positive static pressure. You need more intake fans than exhaust. However its just better to have it balanced. anyways if Positive static pressure is what you want then for the radiator place that for back exhaust. place two intake on top and two intakes infront for positive static pressure

 

[A_Goat]

Two intake SP fans on the front, two exhaust AF on the top, h80i as exhaust on the rear.
This configuration will give you better temps.

If you want higher temps and want to fight the fact that hot air rises, fill all slots as intake expect for the rear slot which will hold you h80i as exhaust.

 

[YoDa_95]

Two intake SP fans on the front, two exhaust AF on the top, h80i as exhaust on the rear.

But doesn't that create a negative static pressure since there are more exhausts than intakes. Also what size fans are good for the configuration? Also shouldn't we consider the PSU since it has a fan of its own?

 

[A_Goat]

As the 350D supports 140mm, 140mm fans would be the size of choice.
You need SP fans on the front as there is a mesh in the front that the fans have to fight through, on top of the restricted air space.

Yes, it will give you negative pressure. Positive pressure is not an optimal cooling method for that case as it has no side panel fan mounts.
The only "smart" way to have positive pressure in that case is to not use the top fan mounts... so you have x2 front intake fans and rear exhaust with the h80i. But as you want to use all the fan mounts, I would not recommend positive pressure... as it will give you poor airflow.

 

[YoDa_95]

Then I think I would go for two 140 SP fans at the front as intake, then the H80i as exhaust at the back. And maybe add one AF 140mm fan on the top also as an exhaust as hot air rises anyway...will this work?

 

[A_Goat]

That would also be good.