wondering about components

someguy827

Honorable
May 28, 2013
192
0
10,690
does anyone know how much of a difference would there be between a AMD FX 6300 and a 8320 paired up with one of these cards:
Sapphire radeon 7870
Sapphire radeon 7870 XT
geforce GTX 670
i am also not sure if its worth paying $340 CAD for a 670, so any help would be appreciated. thanks