Have you already purchased the AM3+ processor? If not, the FX-4100 or FX-4170 would do well.
You could probably get the equivalent performance out of an Ivy Bridge i3 (model number 3000s) for the same price or cheaper.
An example of a good AM3+ board that meets your specifications is this Asrock: »
www.newegg.com/Product/P ··· 13157266As would this Asus (has UEFI as well): »
www.newegg.com/Product/P ··· 13131754