Actually I work a lot on my pc more that 10 hours a day with some heavy software and lots of browsing and a very light gaming.
Right now I have AMD Sempron 145
http://pcpartpicker.com/p/93GTf7
This okay for the price you wont be able to use the front usb 3.0 ports though.
Oh sorry I forgot to tell you that I'm from India we don't have this processor in our country
Right now I've
Corsair 550w Powersupply
Ram 2gb at 1333mhz ddr3