I was wondering if i could replce my heatsink fan combo with a really solid copper heatsink no fan. I ask this because my pc is pretty loud and im looking for alternatives to fans.
There are some nice and quiet heatsink/fans on the market these days, check out http://www.zalman.co.kr/
But I would never use the heatsink without the fan. Danger!
If you have the cash, you could also look into liquid cooling options. Info on the link I gave you above.
Other big noismakers are case fans and PSU fans. I just finished building my computer, and that was my priority was a little peace and quiet. My previous one almost drove me insane it was so loud.
I got the zalman copper. Great fan. Max RPM is 2500 compared the amd 5000 RPM. They compensate by making the copper heatsink HUGE with a LARGE fan to go with it. Pretty creative.