Hi guy first im sorry for my english, im from Cyprus and i dont really speak proper english but i will try my best in order to be clear enough even if i have to use Google Translate i will 
Im about to make an upgrade of my ring, im curently having a HD6850 and i will like to upgrade it. Due to my limited budget i cant afford the latest NVIDIA 770/780 or event an AMD HD7970 but somehow i can afford either 670 or 7950
Please i will like your help and advice concerning both cards, which is best for performance ( i heard that the new AMD drivers bumps 79xxx series card and made them better and way faster than before in a way that a 7970 is now faster than a GTX680 is that true?) and what about 670 Vs 7950 ? which one is better on almost every game (in terms of FPS smoothness etc) for the price they are about the same so im not really worry about that.Also which one can OC Better and give me the most of performance ( i when trough a couple website and i read some reviews but must have them were not update
)
Also im thinking to choose one between those 2 depending on your feedback guys please
1-http://www.overclockers.co.uk/showproduct.php?prodid=GX-190-MS&groupid=701&catid=56&subcat=1673
2-http://www.overclockers.co.uk/showproduct.php?prodid=GX-170-MS&groupid=701&catid=1914&subcat=2294
aslo what is the best brand/model for OC for both 670/7950 ?
sorry im a noob here that why i ask a lot of questions
Cheeerssssss

Im about to make an upgrade of my ring, im curently having a HD6850 and i will like to upgrade it. Due to my limited budget i cant afford the latest NVIDIA 770/780 or event an AMD HD7970 but somehow i can afford either 670 or 7950

Please i will like your help and advice concerning both cards, which is best for performance ( i heard that the new AMD drivers bumps 79xxx series card and made them better and way faster than before in a way that a 7970 is now faster than a GTX680 is that true?) and what about 670 Vs 7950 ? which one is better on almost every game (in terms of FPS smoothness etc) for the price they are about the same so im not really worry about that.Also which one can OC Better and give me the most of performance ( i when trough a couple website and i read some reviews but must have them were not update
) Also im thinking to choose one between those 2 depending on your feedback guys please
1-http://www.overclockers.co.uk/showproduct.php?prodid=GX-190-MS&groupid=701&catid=56&subcat=1673
2-http://www.overclockers.co.uk/showproduct.php?prodid=GX-170-MS&groupid=701&catid=1914&subcat=2294
aslo what is the best brand/model for OC for both 670/7950 ?
sorry im a noob here that why i ask a lot of questions

Cheeerssssss

i didnt know that this card has a lot of issues but on the title it says New revision! so it might be fixed? 