i got this acer aspere 5515 cheap thing at wallmart it came with the amd 2650e athlon 1.6 ghz singal core and swaped it out for an amd 4850e 2.5ghz runs good but some times gets a little hot i was wondering if there was a good cooling program or fan upgrade that i could get i think a little bigger fan whould do the trick but cant find an upgrade help!