Jordi, I do not understand why do you continue to rely upon Alternate's customer support that has proven so many times unreliable.
SPCR has already tested the P8P67 PRO, you may read about its fan control here
Thanks for pointing out the obvious... which I missed. I guess I just wasn't thinking straight.
The board supports control for three fans in total, with PWM-only control on the CPU fan header, and DC voltage control on a pair of Chassis fan headers. Both the settings in the BIOS and Asus' Fan Xpert utility work as prescribed, though Fan Xpert is better in that it can set a lower minimum fan speed for the Chassis fans (20% rather than 60%). The current version of SpeedFan is not compatible the two boards, only displaying temperature readings and no speed controls.
The user interface of the Asus UEFI and software package are friendly and pleasing to the eye, especially compared to what Gigabyte has presented so far. However, the P8P67 series earns a couple of small demerits in its Fan Xpert utility. The feature does work wonderfully, with intuitive controls, and the capability to bring the speeds of three fans down to 20%. However, the CPU fan header can only control a 4-pin PWM fan, which is a shame for users who already have a good 3-pin fan on their heatsink. The other issue is that we could not get Fan Xpert to remember its fan control settings on either board, causing the fans to run at full blast after a reboot until settings were re-entered. The BIOS can set only one fan that low; the other two can be slowed to only 60%. This might not be enough for some of our more silence-oriented readers. Hopefully these are minor issues that will be corrected quickly in the next version of the software or in a BIOS update.
So the review answers a few questions, I think.
One is that it uses DC voltage control on the chassis fan headers. At first I thought (yay, that means it can control 3-pin fans, but then I read about AI Suite II here
("Your CPU fan and any chassis fans that you have connected to one of the PWM 4-pin headers on the motherboard can now be set to 1 of 4 different profiles: Turbo, Standard, Silent, and User") and that made me think otherwise. So I'm confused again.
Two is that it is possible to set minimum fan speed lower than 60% through Fan Xpert, although for only one fan through BIOS (which was mentioned earlier in this thread) and the rest gets reset after reboot (I can't tell which version SPCR used for the review). And three is SpeedFan's incompatibility with FanXpert when it comes to speed control (which has also been mentioned before).
Another question that remains, regarding the case fans, is if it is possible to accommodate three case fans, all with speed control through the motherboard. Am I right to think that two Noctua fans (max. 700 rpm) could well be supported through one motherboard heather (like Abula said)? I'm awaiting an answer from Alternate regarding this matter.
There are Y extensions, not recommeded to overload a single mobo heather, but there are options like Akasa Flexa FP5 PWM 5-Way Splitter - Smart Fan Cable (AK-CBFA03-45), that will let you power 5x 4pin PWM fan via 4pin molex and get the PWM signal through the mobo 4pin heather.
Regarding the CPU heatsink, the Macho is now officially off the table since Alternate is unable to supply the new mounting bracket for it. This leaves me with my other choice: the Scythe Mugen 3.
So how about the PSU fan. I'm not able to control that one anyhow, right? If I even need to...
PS: I had this whole reply typed out and I thought I had posted it but when I checked, it seemed I hadn't. Luckily I make a habit of copying the whole thing before I do so and I hadn't copied anything else since so, yay, didn't have to do it again.