Why is it that I see some people overclocking their CPUs by lowering the Bus Speed, and raising the Multiplyer or by keeping the multiplyer where its at and raising the Bus Speed what are some of the pros and cons of these different methods? Or is it that its better to lower the Buss Speed, higher multiplyer on the new iXXX series CPUS And raising just the buss speed on the 775 socket? Thanks for the help guys
Basicallyit comes down to the maths. This is a completely fictional example but demonstrates the point 12 X 333 is base gives 3996 if we raise FSB to 350 we get 12 X 340 which gives 4080 if then we drop the FSB to 300 but raise the multiplier to 13 13 x 315 we get 4095 In some cases temperature, volts or just an unlucky processor just might not go any further. By dropping the FSB and raising the multiplier you then may be able to squeeze an extra few Mhz out of a processor. Its just to do with where that magical wall is.
Extra FSB frequency could edge ahead in bandwidth intensive applications aswell. Both methods achieve the same result practically except only specific CPU's can raise the multiplier.
Yea, Black edition processors for AMD have unlocked multipliers eg. phenomII 720 BE, PhenomII 550 BE On LGA775 it was Extreme processors ie QX9770 i think it was. I donno about i7 or i5's tho. They autooverclock overclock tho by changing the multiplier I think. Its also based on if the motherboard allows you, some don't have the option in the bios to but most do.
