I had exactly the same problem in reverse. I have 1000 RPM Scythe Fans. When using anything above V82 BIOS - system fan speed was 350 RPM. Things got warm!!!
When using V82 BIOS - System fans were 550 RPM. Cooler, but still warm.
I have since disconnected the system fans from the headers and connected to PSU. Spinning at 1000+ RPM. Case much cooler.
CPU fans always spins at 1150 - 1800 RPM depending on load.
This may be my last Intel Board.
i just installed version 96
my fans still "groan" at me
looking at the bios, it seems the front and rear fans go from 0 RPM to ~1500 RPM in an infinite loop
i will be going back to 082 again...
this breathing noise is making me crazy
i tried setting processor zone dumping to high and processor zone response to slow
it didn't make any difference
I've searched high and low for a solution to the DP43TF motherboard reboot problem... Booting from a 'power-off' condition works very well, however, 'rebooting' from within Windows 7 or by pressing a manual 'reset switch', results in NO REBOOT AT ALL...!
This is my first INTEL board, and I am quite sure that it will be my LAST INTEL MOTHERBOARD... I have submitted this problem to INTEL several times and have yet to receive the courtesy of a reply... In my opinion, INTEL has gotten too big for it's 'BRITCHES', and simply doesn't give a hoot about individual issues...
Too bad... But, the good news is that there are MANY competitive board manufacturers who provide FAR BETTER support to the individual customer.
By the way, the fan speed issues are prevelent in this board also... I re-wired all fans directly to the PSU and ended all fan issues...