Whats the best mobo for OC athlonxp cpus

The 2500+ is not an extreme OC'ing CPU so buy a board that fits your needs, not one that can get you the max overclock since most AM2/AM2+ boards will give you more or less the same outcome using that CPU.

Here is a list of boards that you can look at. I cannot tell you which one to buy because these boards might be missing a few amenities that you posted above.

http://www.newegg.com/Product/ProductList.aspx?Submit=E...