What is the best cpu for nforce 4m-a v3.0

[karlo.rubcic]

Hi I am looking for best cpu for this motherboard:nforce 4m-a v3.0
I have 550w psu
Gtx 650 1gb
Thanks!

 

[CountMike]

AMD Athlon™ 64 LE1640
http://www.ecs.com.tw/ECSWebSite/Product/Product_Support.aspx?DetailID=675&CategoryID=1&DetailName=Feature&MenuID=24&LanID=0