I don't think the Intel 965P chipset can support the 45nm Q8400 Quad cpu. I know it can support 1333 FSB cpus but, I am thinking it supports the 65nm 1333 FSB cpus like the Intel Core 2 E6550 for example. The Rev 3.3 model will support the 45nm Yorkfield Quads.
well F13 is no longer in beta and F13 is what added .45nm support for 2.0/3.3. F13 is what i have on my 1.3. hoping to get 3.6Ghz out of teh q8400 as my mobo does 1800mhz fsb with no prob. also the chipset revision on mine is C2. We'll see i guess.