Best Socket A CPU Fan/Heatsink

[immy]

In search for a quiet PC,

Ive just replaced my QTEC 550w psu with a Hyper 580w PSU.....
Result = Not much reduction in noise.
Prime noise culprit is my Socket A CPU Heatsink/Cooler.
My motherboard is an ABIT NF7

Looking around on the overclockers website, i cant seem to find any socket A cpu coolers.....so can anyone reccomend a good cooler which is also fairly quiet. My current cooler is a big mass of copper with a 80mm fan on top which is very loud.

My current cpu fan can be heard from downstairs, its that loud!

So what do you guys reccomend?
Can i just replace the fan with something bigger or quieter? or will i need to replace the heatsink too.

 

[immy]

at the time i bought my heatsink it was meant to be one of the better ones.
im thinking i could replace the temp controlled fan on the heatsink with a yateloon or something rather than replace the whole unit.