Whats a good FSB voltage for a big OC?

My Specs:
Quad Core Q9550 OCed @ 3.83GHz
XFX GTX 260 core 216 Black Edition (712 core / 1215 mem)
4GB Corssair XMS2 DDR2 800 (4-4-4-12) 2.1 volts
EVGA 780i Mobo
700w OCZ GamerXStream PSU
320GB Hard drive 16MB cache 7200RPM
Sound Blaster Audigy SE
Windows XP


So after doing the overclock on my CPU I have left the voltages on auto. The CPU has automatically increased to about 1.35v and the FSB to 1.3v. The computer seems stable while playing, but I am having boot up issues. The computer sits with a black screen for about 45 seconds before it will post. Then I get a safe mode warning. This does this regardless if overclocked or not. Even on default settings still. I have cleared the Cmos, updated bios, you name it. So I am wondering if its a FSB issue. The error code on the board for the 780i is 21 which is a power management error. I got a new PSU and still the same thing. Got new Ram, GPU, even switched out my mobo 3 times.

Thanks. Problem has been fixed, but thats good to know for the future.