Quote from: miguportugal on May 30, 2015, 05:00:56 PM

Quote from: pekatete on May 30, 2015, 01:11:12 PM

Quote from: miguportugal on May 30, 2015, 11:11:33 AM

i fit an S3 fan but the temperature rise 10º
one blade goes from 52º to 64º the other blade goes from 64º to 74º
the fan was extracting air.

this dont make sense to me. Can someone explain why

If you fit an S3 fan and you are overclocking, you'll have to do the blue-wire hack, i.e disconnect the blue wire to have it running at full pelt as having it controlled by the bizzare S5 PWM firmware will simply muck your efforts up.

Yes, i just connect the fan directly to psu 12v.

After a few tests i think i already understand the problem.
The heatsink is not very hot but the board is very very hot so the temp sensor is very hot.
We need to remove the hot from the board so We need to fit some heatsink in the back of the chip (back of the board).

Now my ant s5 is like this
https://www.dropbox.com/s/tlvc3wt49d86guc/FullSizeRender%2020.jpg?dl=0
https://www.dropbox.com/s/pgdu8mc3w0fd366/FullSizeRender%2019.jpg?dl=0
https://www.dropbox.com/s/ioa1rpxerqggomd/FullSizeRender%2018.jpg?dl=0

At 20º ambient temp the result is

https://www.dropbox.com/s/llncm34vwj59n9q/s5_425_sem_tampas.png?dl=0

Wow freq of 425 no wonder it's getting hot. You are really pushing it very hard.

Even if adding another heatsink and if you redid thermal past it still will run hot. Just very few go to that level on overclock.