I currently have a 6670 DDR3 1Gb video card and this was just for a temporary video card. I am looking for a new graphics card and my budget is $200 - $400. I have my eyes set on either a 7870 or a 7950. The 7950 just so if i ever want to crossfire i can bios unlock it to a 7970 and xfire with another 7970 or 7950. But i am having doubts about those cards and want to try nvidia also. So my question is what card should i get between the budget of $200 - $400?