THATS cuz your system is heating up and the fan need to spin faster to cooling the cpu better. it will slow down again if you're arent really doing anything again. same thing with the cd burner, the fan will start spinning real load for certain burners and then if it aint reading again it will go quiet.
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QX9650@4.2 swiftech |9600@3.0 9700 nt
780i | 790fx
8gb ddr1200 | 8gb ddr1200
2x150gb 3x1tb |2x250gb
3x8800gtx |3x2900xt 1gb
2x20xdvdrw |2x20xdvdrw
15in1 card reader |15in1 card reader
ng15/g9 |ng15/g9
1200w psu |1200w psu
2x28" LCD |2x28" LCD
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