maybe i misinterpreted the word bottleneck, but what i really wanna ask, is, e.g.
running F.E.A.R., at lowest resolution, with all setting to maxed out,
my sempron paired with x300 or 7300GT will make any difference at all, or huge improvements(in fps)?
and will the performance gain(in fps) stay the same if i use a lower range graphic card such as 7300GS, x550, etc. (if yes, then my processor is the bottleneck)
i hope i make my question clearer now.
thanks for all the useful replies.