OC AGP bus and videocard

[ginfest]

I've seen statements in certain threads that infer that a higher FSB and therefore AGP bus would limit oc due to the % change above the standard 133(or 100)/66.
So if the AGP is oc a certain amount, say 14% to 75MHZ (150 FSB at 2/3=AGP), does that mean that effectively benchmarks, fillrate and game FPS at 75Mhz AGP 210/465 would be equivalent to the same card running 66Mhz AGP 239/530?
So Somehow I doubt it but you learn something every day, and if true, all the better in my case.

 

[Rand]

In almost ever situation the card clocked at 239/530 on a 66MHz AGP bus would be considerably faster then the same card clocked at 210/465 on a 75MHz AGP bus.

The only impact an overclocked AGP bus will have on performance is to increase the peak available memory bandwidth available through the AGP bus, a 75MGz AGP bus using AGP 4X would have a peak bandwidth of 1.2GB/s compared to 1.066 GB/s from a 4X AGP bus clocked at 66MHz.
Very few currently available consumer graphics cards see any gain from even going to AGP4X rather then AGP2X, so in most all cases the increased available bandwidth will have absolutely no impact upon the graphics cards performance.