Which one of these CPU's is the best for gaming?

#1: AMD FX-4100 Zambezi 3.6GHz (3.8GHz Turbo)
#2: AMD Phenom II X4 965 Black Edition Deneb 3.4GHz
#3: AMD Athlon II X4 640 Propus 3.0GHz

Not really sure which one is better for gaming... they all get really good reviews. Just need some fellow gamer's to give me there opinions and experiences with these CPU's.

Also which one would run best with this MOBO and GPU?

MOBO: ASRock 960GM/U3S3 FX AM3+
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


GPU: EVGA 01G-P3-1556-KR GeForce GTX 550 Ti (Fermi) FPB 1GB 192-bit GDDR5 PCI Express 2.0 x16
http://www.newegg.com/Product/Product.aspx?Item=N82E168...