Hacking Rec. Fan Speed?

[F4LK]

Not sure if it's in the right forum, move if it's not

So today, i got a XBOX 360 Slim with RGH, Aurora and all that stuff in a really good condition.
The previous owner used to keep the Fan set to 100%

But it's really damn loud, was wondering, what would be the the recommended fan speed?

 

[DinohScene]

You can set it to 65% or 70%.
Doesn't matter much, as long as you keep the temps fairly low (under 65c)