Conroe is only dual Core: 1066/2 = 533 MHz/Core AT LEAST (667MHz/core for the 1333 version)
While for 4 cores you have 1333/4 = 333 MHz/Core, that's AthlonXP levels, half that of Conroe, it will definitely be pretty crippling.
Sounds like what they told about the Conroe too.
*OMG! Conroe still uses FSB! One FSB to feed 2 cores! TWO Cores! OMG!
*OMG! Conroe doesn't have an IMC! A processor in 2006 without an IMC! OMG!
*OMG! Conroe is made by Intel! By Intel! That stupid company still makes CPUs!
Personally I never thought FSB 1066 would be a problem for Conroe and of course it won't keep 4 cores from outperforming 2 of them but performance will not be fully unleashed if they use that FSB; nothing personal with Intel but they're just numbers; one of those cores will work with 333MHz FSB, one of Conroe's works with 667MHz.
However, I think sooner or later, Intel will "invent" some new technology, name it something like "upper traffic technology" and go ahead with it