A couple months ago, I was tired of buying those little compressed air canisters (usually costing about $8 bucks a pop) for cleaning my PC components of dust.
I hated how they’d get really cold, causing them to stop blowing air as strong.
I finally bought this air compressor and blower attachment for about $120 ...http://www.amazon.com/Porter-CMB15-Oil-F...110&sr=8-15http://www.amazon.com/Air-Blow-Gun-Inter...6733&sr=1-9
At 150 PSI max, this particular model will actually blow labels off of your circuit boards if you’re not careful. It’s powerful, and it doesn’t go into super cool mode like those dang CO2 canisters.
If used outside, it’s a great tool for blowing all the crap out of your computer components and power supply.
I’d recommend a bigger air tank than 1.5 gallons though since this model takes a little while to recharge between bursts. Not long though ... I usually just take a beer out onto the patio while I’m doing this to my two PCs
If you have a need to drive some pneumatic tools, this would be the perfect excuse to buy a bigger unit but I think it would be wise to stick with an oil-free compressor for blowing off computer components.