ghost

Yes air is a fantastic choice, I clean dusty PCs out with a compressor, does a excellent job. Just hold on to the fans when you point the compressor at them, as they could break if you don't.

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ASUS A8N SLi Deluxe
Corsair 2GB DDR XMS3200XL Pro TwinX (4x512MB)
AMD Athlon 64 X2 939 4600+ @ 2.6 Ghz
ATi Radeon HD 3850 @ 680/844
80GB SATA HDD/200GB PATA HDD
1x DVDRW DL
485W PSU, Alpha watercooling