Passive watercooled pc (not under load)

[oscarjw]

Hi,

quick question, would i be able to run the fans on my radiator off when the computer is idle? (currently 3 140mm exhausting out the top). in idle my temps are under 30 degrees most the time, for web browsing etc.

so would it be okay to run the fans off and then power up as temp goes up? as asus ai suite doesn't have this option.

i have hardware labs 420mm rad in there with a ek CPU block and pump combo with a D5. using 13mm/19mm tubing.

i intend on adding my hardware labs 280mm rad and my 2 7970 blocks, just haven't had enough time.

so my question could apply to both my current and future situation differently.

other fans 2 bottom 140mm intakes thats it, i have the option to run these on/off in ai suite on a temp graph which is basically what i want for the cpu as i prefer positive air pressure.

otherspecs may be important?
3770k
asus maximus v formula
7970 cf
nzxt 810

Thanks in advance

 

[oscarjw]

In theory - Yes

But it is not recommended as passive cooling radiators will result in unstable temperature of the fluid...

Reference:
http://martinsliquidlab.org/2012/02/04/passive-0-rpm-fans-radiator-test/

exactly the answer I was looking for, sounds like I will just need to wait for my ideal 140mm fan.

Depending on your setup you might find the pump noise is more of an issue than the fan noise (when fans are already at low speeds).

pumps not an issue for me runs 2000rpm silent and is mounted on sugru, as are my harddrives, great for soundproofing.