Hey everyone. So I am looking at replacing my hd7870 with a hd7970. The only reason i am getting a hd7970 over a gtx 680 is because of the overclocking abilities of the hd7970(Can't forget about crysis 3+Bioshock infinite deal as well!). The unfortunate part is that i have read some people had their voltages locked and were not able to unlock them. This would be an issue for me. I have looked around but i can't seem to find a 100% answer on what is locked, and what is not.
If anyone with knowledge on this matter could help me out, i would greatly appreciate it and it could potentially save me a lot of problems when the card arrives. Thank you for your time and any help i may receive. If you have any questions feel free to ask!