Self spinning fans

[Hotwired]

Interesting scenario.

I have two 12cm case fans at the front powered by the mobo pulling air in.

One 20cm and one 12cm powered straight from the PSU pushing air out at the top/back.


An energy saving program on my computer was set to lowest power consumption.

It shut off the case fans being powered by the mobo and dropped the cpu fan to low speed.

The 20cm and 12cm pushing air out of the case carried on at full speed because they were manually regulated on a cable from the psu.

The 12cm fans at the front which were powered off... keep on spinning from the airflow being drawn in by the other two fans

Thats some sweet airflow

 

[Hotwired]

The 12cm and 20cm exhaust fans are on manual switches from the PSU fixed to the case, informative settings of low, medium and high

20cm is always on high because it doesn't really make that much noise, I think most of the noise it does make is down to the huge amount of air it moves through the grill. Only does 800rpm max.

12cm is medium normally because it won't start on low voltage o.0 and I think it does nothing worth having on low. So medium it is.


For normal use all fans are at medium. Too much of a turbine with everything at full blast.

Mind you the worst of the lot isn't the case fans. It's that stock P55 intel cooler.


Everything on low and it just makes a quiet hum which is dwarfed by the occasional electrical squeak and gurgle from the rest of the electronics and HDD.


I'm going to set up the exhaust fans to be controlled by the motherboard at some point too. Swapping between 4ghz and full speed fans to 1.2ghz and extremely quiet fans at the touch of a button while using the computer = win.

4ghz can wait for that H50 though.

Amazing programs with this mobo. Beats using manual fan controls and overclocking from the bios

 

[Hotwired]

Seems I can't get positive pressure even with both 120mm intake fans on full and the 120mm+200mm exhaust fans on low.

Notable negative pressure when the exhaust fans are on full. But since the exhaust fans were all that came with the case and the fans assisting intake were optional, guess it's meant to be a negative pressure case.

Does make me wonder how useful the dust filters are when the negative pressure means every grill is now sucking air in ESPECIALLY the ones without a restrictive air filter.

I suppose I could disable the exhaust fans if I really wanted but meh, it cools. I'll just have to dust the inside.

 

[Hotwired]

Silent is all very relative.

Mine is a sound reducing case and I know it's never going to be silent to me. But I'm not bothered.

If I'm working the system autoclocks itself to 1.4ghz, turns off the case fans and has the CPU cooler on low. That's pretty quiet.

If I want to game then the system autoclocks itself to 3.5ghz, turns on the case fans to high and gets some air shifting. Still less noisy than a handheld fan. Matter nothing at all because I play with earphones and case hum is inaudible.

I'm not talking about Turbo mode on the i5's mind you, that's disabled, program called EPU-6 doing this for me