The motherboard-architecture is still 32-bit, as it seems, as opposed to the 64-bitness of the Core 2 Duo processors. How will this difference affect the performance of the new iMacs? What does this mean for 'true' 64-bit performance when Leopard is here? Or does it only mean there is still a RAM limit?
What, in essense, is the difference between a 32-bit motherboard and a 64-bit one? Is it bad to have a 64-bit processor on a 32-bit motherboard? Is there a chance the iMacs will, some time in the near future, silently be bumped to a 64-bit motherboard? Or is that the Santa Rosa motherboard architecture I keep hearing about? That was due in mid-2007, right?
Are these iMacs still not the true 64-bit machines we were waiting for? Does this indeed mean that a Conroe minitower (the Mac Pro mini) will be announced Next Tuesday?