In the spirit of this thread, there is an option under the Energy Saver preferences to spin down the disc whenever possible. I think I've seen a few pauses which I'd attribute to having to spin the hard disc up after letting it idle and spin down, so I've turned this off. I haven't seen such pauses since.
I wouldn't recommend doing this on a portable as it probably contributes significantly to power saving capabilities. As for desktop power consumption - I've been ripping my CD collection through iTunes all afternoon (about 1800 songs so far), which means both processors have been at about 75% virtually continuously. My 1GB of extra memory arrived, so the case got opened. The PSU seemed hotter than the big heatsink over the processors! I doubt this is really caused by keeping a hard disc spinning more frequently.
And the PSU says "400W Max" on the side, so Powerjacks's hypothesis (was it him?) doesn't seem to bear up.
And I can confirm that mixed 256Mb and 512MB DIMMs work together - in case there was any doubt (there was in my mind prior to inserting them, mainly because none of Apple's literature wanted to explicitly say you could mix sizes).
I wouldn't recommend doing this on a portable as it probably contributes significantly to power saving capabilities. As for desktop power consumption - I've been ripping my CD collection through iTunes all afternoon (about 1800 songs so far), which means both processors have been at about 75% virtually continuously. My 1GB of extra memory arrived, so the case got opened. The PSU seemed hotter than the big heatsink over the processors! I doubt this is really caused by keeping a hard disc spinning more frequently.
And the PSU says "400W Max" on the side, so Powerjacks's hypothesis (was it him?) doesn't seem to bear up.
And I can confirm that mixed 256Mb and 512MB DIMMs work together - in case there was any doubt (there was in my mind prior to inserting them, mainly because none of Apple's literature wanted to explicitly say you could mix sizes).
