you mean Cooler?
if you DONT OC or live in a WARM country it would be OK with the stock cooler
ps - i use a Thermalright SilverArrow-Extreme // on warm summer-days i have 40°C in my flat - so i need a good cooler
Unfortunately some AMD pages about the warranty and the cooler are quite old.
AMD/ATI as a long lasting company with a lot of pages, that often get forgotten, it is hard to update all the policies of a company everywhere.
To answer to your question, you can use another cooler with AMD cpu's, AMD company need to update this page stating it is an issue i think.
So you can buy an AMD cpu and change the cooler without voiding your cpu warranty.
Obviously if the cooler you plan to use is better than the AMD one, that to be honest, is a great cooler for stock and/or small oc.