Running a PC from your car's battery

[Jonnybump]

Next Sunday I'm planning on attending an event where I will need to have access to my spare PC, TFT monitor, and printer. It's out in the middle of nowhere though, so this leads me to eBay where I will hopefully by picking up a DC-AC inverter. The inverter is rated at 150w whereas my printer is 23w and my monitor 25w (TFT). My PC however, is one of these small form factor PCs and has a maximum output rating of 185w.

What I'm wondering is when I'm using the PC for simple things such as viewing and printing photos, does it consume much power? Or is there a way I can actually reduce the power output of the computer by altering settings (like for example 'underclocking' it as opposed to overclocking so as to use less power) - or maybe by removing unused devices like CDROM and floppy drives.

Also, is it possible to measure the PCs power output? Basically I need the output to be equal to or less than 100w.

My sister has a laptop which has a rating of 65w but I seriously doubt she'll let me borrow it for the whole day.

Cheers all,
Jonathan

[SM]

Screen on low colors and not too bright.
Remove CD ROM + floppy + anything else, doubt you'll get it down to 100W, but just try it and see .. only true way of knowing.

Check the Carputer thread in ICE section, see what size inverters those guys are running, 500W seems to ring a bell ... but check that figure.

[Jonnybump]

Screen on low colors and not too bright.
Remove CD ROM + floppy + anything else, doubt you'll get it down to 100W, but just try it and see .. only true way of knowing.

Check the Carputer thread in ICE section, see what size inverters those guys are running, 500W seems to ring a bell ... but check that figure.Just checked the thread and found a link on there to eBuyer for a 300w inverter - thanks very much mate :)

Jonathan