The Cooler Master 690 Club - Page 1759

Originally Posted by ginger_nuts 

The best rule of thumb, and it seems to work with this case, is:
Intake at the front and bottom.
Exhaust top and rear.
If you want more silent operation, you will get away with just exhaust at top and rear, nothing else.

Originally Posted by KhaoticKomputing 

IMO the "stock" set up is lacking. By stock I mean front and bottom =intake, Top and rear =exhaust.
After much experimentation I have settled on a positive pressure case flow (no exhaust fans at all). This set up has 1 big advantage's over negative pressure case.
1. DUST! using all intake fan's allow you to filter the air entering the case effectively. on a Negative pressure case the exhaust fans will actually suck in air from between side panels, Drive bay device's (CD drive's, Fan controllers, ect) and other place's you just cannot filter.
I would like to add that for the most part, PP setups have generally lower temps than an NP set up. There are exceptions to this but they are few and far between.
I would never suggest some one use a Negative Pressure case(like what you suggest at the end of your post). You have essentially created a bag less vacuum cleaner.

Originally Posted by KhaoticKomputing 

IMO the "stock" set up is lacking. By stock I mean front and bottom =intake, Top and rear =exhaust.
After much experimentation I have settled on a positive pressure case flow (no exhaust fans at all). This set up has 1 big advantage's over negative pressure case.
1. DUST! using all intake fan's allow you to filter the air entering the case effectively. on a Negative pressure case the exhaust fans will actually suck in air from between side panels, Drive bay device's (CD drive's, Fan controllers, ect) and other place's you just cannot filter.
I would like to add that for the most part, PP setups have generally lower temps than an NP set up. There are exceptions to this but they are few and far between.
I would never suggest some one use a Negative Pressure case(like what you suggest at the end of your post). You have essentially created a bag less vacuum cleaner.

Originally Posted by MKHunt 

Countless tests have shown that the amount of dust is directly proportional to the amount of airflow. It's no different than filtering air in a car. Less flow = better filtration = less dust. If your equipment i has already reached a maximum cooling capacity at the lower flow levels, you might see better temperatures with a lower flow setup simply because there is less non-heat-conductive material between your coolers and the air flowing over it (less dust).
But it really does depend completely upon your configuration. Achieving good flow patterns will improve temperatures tens of thousands of times more than the silly "pressure" theories. Anybody who thinks their case has a different pressure than ambient needs a serious reality check.
Also look at it this way. If you clean your case and notice even dusting everywhere, you are doing cooling wrong. That means the air in your case is turbulent everywhere evenly. If you can see different dust densities leading from your intake, over your components, and to your exhaust then congratulations, you have good flow. Dust is carried by air, you should hope it's concentrated around the components you want cooled. Choose a priority, excellent flow or ease of cleaning. To have a quiet case you will really only be able to choose one.
Or go water and stop worrying about flow, just worry about whether the air going through your rads is hot or cold. All of these 'x is better than y' discussions are silly. If you have lower profile ram, you will swear by the benefits of a 5.25" bay fan. If you have Corsair Vengeance or other high profile ram, you will say those people are full of it. Just find what works for your components and run with it.
The dust filters on the 690II are horrible anyway. No computer fan will be able to maintain good flow and filtration while still being quiet. I run gelid wing 12pl fans which have static pressure similar to or slightly higher than AP-15s and the filters still make them work harder. I actually prefer a slight coating of dust since it lowers the air whoosh (the fan motors are super close to silent).
tl;dr: go water, acquire incredibly sexy cooling components, never look back.

Originally Posted by alancsalt 

Oh wow!
Did you have to butcher other 690 cases to get enough racks?

Originally Posted by seeker fi 

Hi Guys!
Just thought to drop by here and show you my second CM690-II Rig.
Warning: Spoiler! (Click to show)
22-drive UnRaid server.
The front is a mess still but the insides are pretty much done.
Link to my Build-log at my sig.