Azn Cracker said:
I don't recommend you doing this. Your cpu will severely bottleneck your gtx 670. You would indeed a large improvement, but you will be wasting a lot of money. I recommend that you get something cheaper like a nvidia 650ti or a radeon 7850.
Also what power supply are you using? You need to make sure its strong enough to power these cards.
thanks for the reply and im building a completly new pc and buying parts as i get the money slowly and i wanted to put the gpu in my current pc while i wait for me to get all the parts i need for my new one and hopefully make a semi decent improvement with my current pc. and i have a 600W power supply