Temperatures increased with Tornado fan??

[mb]

I wanted to try out a 92mm Tornado fan for my CPU just for kicks. It already idled at 29C with the Panaflo, but I wanted to see if it could go any lower with more air.
I hooked the Tornado up to my new fan controller and booted up the system with it on it's lowest speed. It's pretty quiet at 7V and after a letting it idle for a while, my CPU temp was at 29-30C.

Then I went for it - turned up the fan controller from 7V to 12V. Holy crap this fan is loud! So I think, I bet the temps must have fallen at least a couple of degrees with so much air blowing on the CPU, but instead they went UP to 32-33C!

How does the CPU temp increase with more air blowing on it? I wasn't expecting drastic reductions, but for double the CFM I sure didn't expect higher temps!

I guess the fan & fan controller was just a waste of money and time

 

[Leper Messiah]

Originally posted by: supafly
I wanted to try out a 92mm Tornado fan for my CPU just for kicks. It already idled at 29C with the Panaflo, but I wanted to see if it could go any lower with more air.
I hooked the Tornado up to my new fan controller and booted up the system with it on it's lowest speed. It's pretty quiet at 7V and after a letting it idle for a while, my CPU temp was at 29-30C.

Then I went for it - turned up the fan controller from 7V to 12V. Holy crap this fan is loud! So I think, I bet the temps must have fallen at least a couple of degrees with so much air blowing on the CPU, but instead they went UP to 32-33C!

How does the CPU temp increase with more air blowing on it? I wasn't expecting drastic reductions, but for double the CFM I sure didn't expect higher temps!

I guess the fan & fan controller was just a waste of money and time

Did your ambient temps and/or load increase?

 

[redhatlinux]

Does the name TORNADO give you any hint ?? Why not try 12volts from the first boot? Also, what is the airflow like in your case. Exhaust fans, getting rid of the heated air are very important, you seem to be stirring up the hot air in your case rather than moving it out the back. Intake fans on the front do help but the airflow out the back should move cooler air in the front.

 

[mb]

Ambient temps remain the same.

Load temps when starting prime with Tornado @ 7v and then turning it up to 12v when peak temp is met results in the same load temps (48).

Load temps when starting prime with Tornado @ 12v result in a slower rise, but eventually reached the same load temps as the Panaflo (47-48). At this point if I turn the Tornado back to 7v, the load temp is 48-49.

 

[mb]

Originally posted by: redhatlinux
Does the name TORNADO give you any hint ?? Why not try 12volts from the first boot? Also, what is the airflow like in your case. Exhaust fans, getting rid of the heated air are very important, you seem to be stirring up the hot air in your case rather than moving it out the back. Intake fans on the front do help but the airflow out the back should move cooler air in the front.

Uh, Tornado = fast to me...

I didn't have the fan on 12v at boot up because I can't tell the CPU temp until I am in Windows and I wanted to wait till I can monitor it. Running it at 12v during start up wouldn't make any difference in the idle temps once I am in Windows. With the fan controller and I can change the voltage with the turn of a knob.

I have a high speed 120mm Panaflo and a PCI slot fan for exhaust and have a 92mm Panaflow and 120mm Antec fan blowing from the side.