If you are not going to overclock then get a slow fan for it, will be cool and quiet. If you are going to try and OC then get a faster moving fan. You can get the best of both worlds with an Enermax Adjustable fan. They come in a purplish color and now blue. Many different places have them but you could start
here. Good luck. Oh and also, if the holes on your motherboard are not really big, throw those shoulder washers away. They can cause issues if you holes wont support them!