Airflow assistance

I have my Case Labs SMH10 ready to be setup sitting in a room all lonely along with 22 Gentle Typhoon AP-29 (3000RPM) fans.

From my experience with using them in the M8 for a couple of months, I am not very happy running them full speed. They're louder than my air conditioner. Preferably and according to Martin, the best speed/noise ratio is around 2200 RPM. I don't think I would mind around a maximum of 2400-2600 but turning the M8 on (which by the way is only using 6 of them) sounds like a Mustang GT starting up. I can't imagine 22 of them at full RPM.

My main concern now is my actual airflow. I have DEMCiflex filters that I will be using on all intake fans.

I was wondering what I should do in order to get the correct pressure system. I do NOT want the same thing as my old M8 where I had more exhaust than intake.

For those not familiar with the SMH10, there is a semi-separate chamber on the bottom of the case somewhat isolated from the top where the motherboard, GPU, watercooling, etc. will reside.

My current plan is the following:

2 x 2400 RPM = FRONT, INTAKE
1 x 2400 RPM = BACK, INTAKE
4 x 2100 RPM = TOP, EXHAUST

This covers the top chamber. I'm hoping the extra 300 RPM on the intake fans will compensate for the lack of a fan as well as the filters and bring more air as intake than as exhaust. Thoughts? Should I modify RPMs? I'm hoping the bottom of the case won't interact much with the top chamber, but there are holes in the case so some OCN physicist feel free to help!

1 x 2400 RPM = FRONT, INTAKE
8 x 2400 RPM = PUSH/PULL, EXHAUST
6 x 2400 RPM = PUSH/PULL, EXHAUST
1 x PSU = EXHAUST

This is where I am concerned. That's a lot of exhaust. These will be on radiators except for the front fan which will act as intake so the air around the front has somewhere to get sucked in (and filtered). I don't believe using the radiators as intake is a good idea since then the air will clash with each other and stagnate. The PSU will also be down there acting as exhaust as well. I don't want the bottom to suck all the air out of the top chamber either, unless this is a desired result for cooling. I'm hoping it won't interact much with the top, but from experience I know the air will get sucked through any hole possible.

I would really appreciate any input on this as I don't want to modify it once it's put together.
Edited by xyeLz - 8/9/12 at 1:33pm

Thanks for the help so far.

Here's an image of the case:



As you can see, determining the bottom can be quite tough. If I have both radiators as intake, the air will stagnate in the middle and cause more trouble than good. If I have both radiators exhaust, I have far more negative pressure than I want. If I have one radiator intake and one radiator exhaust, not only do I need another dust filter for the intake, but this isn't nearly as efficient as both radiators exhaust (as tested by Martin).

I was assuming the intake fan on the front would somewhat "suck" all the air near the front and sides that would be trying to get sucked in elsewhere.

Other than that I'm not sure.

It's double wide. You can fit a radiator on each side in push/pull configuration.

Here's one side: