none of your pci components are running at 127mhz or 105mhz. there's a divider for a reason, and you not knowing that is very dangerous for all of your components. on most systems, there's a 1/2, 1/3, and 1/4 divider. if your fsb is at 66mhz, it uses the 1/2 divider, if it's on 100mhz it uses the 1/3, and 133mhz uses the 1/4. do the math and you'll see that the pci components all run at 33mhz. when you run at speeds in between 66 and 100 or 100 and 133 or above 133, the components all run faster than they were meant to because they're still using the lower divider.