something that wont overclockhttp://pcpartpicker.com/p/eWXA
something that willhttp://pcpartpicker.com/p/eWXZ
get the OS from where i suggested
2 more things
if you are doing things that require more CPU power or threads, look into a i7 3770k.
(luxury item)you can buy a samsung 830 128gb and put your programs, OS, and other apps onto the SSD and get much faster loading times, boot times, and just a overall faster system