OS X recognises the HD-DVD from a 360 instantly. Doesn't mean it can play HD-DVDs though. DVD Player doesn't contain the drivers to allow this. When this is done, I have no idea what the performance is going to be like. On the 360 all 3 cores are at maximum load, and the ATi chip is also doing some of the decoding on the GPU. So it might kill all but the fastest Macs.
It gets really technical, but the Xbox 360 cores are not on par with intel/AMD cores, and the core duo is much better at PC-ish tasks. I'm certain that any intel mac other than perhaps the minis can handle HD-DVD.OS X recognises the HD-DVD from a 360 instantly. Doesn't mean it can play HD-DVDs though. DVD Player doesn't contain the drivers to allow this. When this is done, I have no idea what the performance is going to be like. On the 360 all 3 cores are at maximum load, and the ATi chip is also doing some of the decoding on the GPU. So it might kill all but the fastest Macs.