[CUBE] cube power supply and upgrades

[Richard Clark]

On Tuesday, Jan 7, 2003, at 21:34 Europe/Rome, Tom Davidson wrote:

> It's rated as a 225W supply.
> ADC monitors use between 100W (crt) and 55W (15" LCD)
> That leaves about 125W, worst case for the core and all things
> powered off USB and Firewire. Choose carefully :)
>
> The dual 1G 7455 uses about 90W , the max a video card can use is 25W,
> that doesnt leave much for the hard drive and motherboard.
Could this be why i read a post once about improving performance on one 
of the upgraded cards by plugging out the apple speaker maybe they were 
too taxing not enough power getting to video card.
>
> You can use up to 12W per firewire port, and I think the Cube USB
> Powered speakers use 20W.
> What Powerlogix is counting on is the new generation of Moto CPU's are 
> supposed to use much less power, maybe even 1/2 as much.
>
> The question is, how much margin did Apple design into the Brick??
> I'd rather not find out the hard way.. maybe it's good for 10A (280W)
> if it's got better cooling, it was probably designed for no cooling, 
> laying on a carpeted floor with no airflow. If you put it on a stand
> and lifted it off the table/floor, air could flow through it, of course
> a small, quiet fan wouldn't hurt either. Just sticking some clear 
> rubber
> feet to bottom to lift it up off a table 1/2" will help a lot. They 
> seem
> pretty rugged, never read of one failing here.
>
>
>
> Date: Tue, 7 Jan 2003 19:41:33 +0100
> Subject: [CUBE] cube power supply and upgrades
> From: Richard Clark <mawgadog at tin.it>
> Message-Id: <A50A2976-226F-11D7-9139-003065C18A26 at tin.it>
>
> Everyone is always talking (and doing for that matter) upgrades on the 
> cube bigger hard drives faster video cards and cpu upgrades. To cool 
> as this stuff down fans are added one in the base of the cube and one 
> usually on the video card. What about the cubes power supply if all 
> these things are more powerful they drink more juice and that must 
> heat up the brick also which would shorten it's life, is the power 
> brick forgotten or is it already over engineered to take this extra 
> punishment, should we think about cooling that also? Anybody have any 
> ideas on this subject?
>
>
>
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