So I bought a new CPU fan.But the mistake a did is I didnt clean the old thermal paste so I applied the one one over it.My CPU Temps with the stock fan were around 70C,with the new one I didnt notice any difference.Will buying a new one,cleaning the current one make a significant difference?
EDIT:The way I applied it,is by covering(spreaded) the cpu with thermal paste.I guess thats the problem right?
Yeah, you just need to completely clean both the CPU and the heatsink and re-do the thermal paste. I'd try a small "pea sized" dot in the center of the CPU heatspreader this time, though (and not spreading it).
Not cleaning off the old stuff almost always causes temp issues.
For Flat surface HSFs, I use the peas size quanity, then with a latyex glove I use my finger to spread it.
For HSFs such as the Hyper 212 that is NOT a flat surface, I prefer using a credit card to fill the voids, then a very thin film in the Cpu.