OC'ing my cpu not more dangerous than buying a new one?

As some might know, my cpu runs into an FSB wall @ 224mhz as long as the PCI bus is locked @ 100mhz.
I wanted to do some more overclocking so I experimented with raising the PCI speed- which resulted in me being able to boot at speeds higher than 224 FSB (266 was max I tried- I don't intend on going that far.)

I was bored a while ago and read the owner's manual for my mobo with the installation instructions. I read that though my mobo supports 1333fsb CPUs (ie: the E6750)... HOWEVER, when 1333fsb cpu is installed- the mobo runs in OC mode- putting the PCI speed at a constant 115mhz.

From what I have read- 120mhz is the max pci speed before data corruption occurs. If the mobo is CERTIFIED for 1333fsb cpu's which FORCE it to run at an overclocked spec... shouldn't it also be 100% safe for the mobo itself to run an overclocked processor with a 115mhz pci speed. (note, this isn't an oc'ed 1333fsb cpu- it's an oc'ed 800fsb cpu... currently sitting @ 1004 fsb.... which pleases me.

Is my assumption right that my MOBO should be fine forever since it is certified to run @ 115mhz pci speed (15% overclock) 24/7?