Wow!the kaleidescape sounds pretty cool - but i'm currently blown away by HD content and 4k streaming on this system, so if i tried kaleidescape i might have an aneurism!
i measured the power consumption - it's about 2.9kw. this varies somewhat based on the brightness levels of the screen. for example, during calibration and showing a pure white screen it jumps up a bit - but on average during movie watching it's about 2.9kw. we're going off-grid solar, so no biggie. ;-)
as far as noise goes - it's silent. i can't detect any noise at all.