Shanghai can now be purchased!

[Aussie FX]

I believe that the 75W number is actually for ACP so true TDP is something like 110W or something like that.

Unless something has changed recently AMD always rate their processors by TDP. ACP is just there to give a comparison with intel as that's how intel rate their processors.

I am almost certain that you have this backwards.

Barcelona are certainly rated by TDP so if Shanghai are rated with ACP then that makes them worse than Barcelona and that definitely isn't the case.
EDIT:
Actually the more I think about it the more certain I am that you have this wrong. My 9950 is a 140w TDP model yet it is around 100w in reality, so if that 140w was ACP then the TDP would be what, around 200w. Sorry but there isn't a motherboard PWM that can handle that.

KTE looked right into this not long ago and came out with some astonishing findings.

EDIT I'm now confused myself as to what is going on with TDP vs ACP so I have asked AMD to clear this up for me, so I will update as soon as I have my answer..(see post #62)