So Ideally we want to crank NB clock high as possible.. at least always matching Core clock (for full L3 speed)

Why not benchmark a phenom at 2.5ghz for example with a 2.5ghz NB clock (x) with the y value being HTT Speeds? say vary from the base 200 and go up by 10 cycles or so.

Find out if theres a bottleneck at all. If not no sense trying to max htt to a certain speed.