Fan Curve Profiling

[Steve N. Mavronis]

Can anyone doing total air cooling and using fan profile software give me some advice on getting good positive pressure to minimize dust? I'm experimenting with Fan Xpert 2 from ASUS's AI Suite 3 in this example:

 

[Moonzy]

19 minutes ago, Steve N. Mavronis said:

 

how many intake and exhausts fans do you have in your setup and what size are they, and are they restricted by radiators or just free flow?

[Steve N. Mavronis]

9 minutes ago, Moonzy said:

how many intake and exhausts fans do you have in your setup and what size are they, and are they restricted by radiators or just free flow?

2x140mm intake fans sharing the fan1 header, 1x140mm exhaust fan on the fan2 header, Thermalright Silver Arrow ITX cooler w/140mm fan on the cpu fan header. The bottom intake fan points directly at the GPU and HDD in bottom bay position. The 2 intake fans I added in place of the single stock 200mm fan that used to be there. See photo below:

 

[Moonzy]

simple, to achieve positive pressure, your case fans just have to turn at the same speed all the time lol

since your intake and exhaust ratio is almost 2:1, with the same fan and all

 

your gpu and cpu cooler doesnt contribute much in term of intake or exhaust, so they're negligible

[Moonzy]

oh yea, if your psu's fan is facing up then you need to ramp up your intakes slightly to achieve positive pressure

if its facing down, then you're fine with my suggestion above

[Steve N. Mavronis]

Just now, Moonzy said:

oh yea, if your psu's fan is facing up then you need to ramp up your intakes slightly to achieve positive pressure

if its facing down, then you're fine with my suggestion above

The PSU fan is drawing it's air from under the case facing down through a filter.

[Moonzy]

1 minute ago, Steve N. Mavronis said:

The PSU fan is drawing it's air from under the case facing down through a filter.

then you're good with all the case fans running the same rpm

 

my suggestion is:

connect one of your front fan and rear fan together on a header, and one front fan on another fan header

at idle/low load, one intake fan spins at low rpm, the other two doesnt spin

at high load, all fan spins at same rpm

thats what im doing with my system

[aisle9]

You could probably dial back those curves to quiet your system down. I run a pretty similar fan setup and, for example, my fans don't even come off of their minimum RPMs until 55C for the CPU cooler and 60C for system fans. Temperatures on an overclocked 4790K have never been an issue, but the system is so much quieter than when I had fans ramp up around 40C.