I believe one of the best sources of information regarding all things Mac and how they pertain to the needs of photographers is Lloyd Chambers’ site ‘Mac Performance Guide’ (http://macperformanceguide.com/index.html
). His own testing has shown basically what Josh Holko also mentions in his post, namely that LR and PS can’t really take advantage of such high-core CPU’s. Though his testing of the new Mac Pro hasn’t yet begun, he tends to believe the 6-core version is probably the ‘sweet spot’ for most LR and PS users.
With Best Regards,