CPU fan is too loud

[Computerrock1]

I am running a athlon II x3 and the new owner is complainig that the fanid too loud. I attempted to use speed fan to fix it but it is still running around 6000 rpm. I tried the bios and it set it to a 4 volts but it goes down to 5000 rpm. What software can I use to slow down this fan so I ca make this sale?

 

[Conumdrum]

Get a better heatsink. The tiny fans on the stock cooler is silly loud.

The customer is a bit picky too, but get $50 from them and buy another cooler.

You drop the RPMs, you chance overheating the CPU. have you checked load temps on it at the lower speed?

 

[Computerrock1]

The temps at 5000 rpm is about 38 degrees c on idle and an average of 49 at a constant load. Unfortunately this is a budget build and he won't pay for more than what's allready been put into the computer. I am not planning on loosing money, which leaves me with a small amount of money to buy a new heatsink, what budget heatsink would be effiecient or at least quiet for $10-15 dollars?