7870 vs 7950

You have already overkilled your GPU.

Pick hd 7850 OC edition . Save ur $$$$$.
It is good in term of $$$/performance and will let you play games in ultra setting.

Higher Price = Better Performance of course.  

I run a Sapphire 7870, not even the OC edition and I run stable at 1300core/1525memory. Its a fantastic card. I don't even need to run it overclocked to max out my current games. What games are you into and what are the specs of your monitor and the rest of your system.

3d 1080 monitor

965be @3.7
8gb ram 1600MHz

i want to be able to max out skyrim in 3d and max battlefield
and needs to last a while

Those games are hard to max out. You might be able to do it at 1080P. If you can't max it out you can at least play high/ultra settings with a very comfortable framerate. I consider maxing out to be 60+ FPS.

http://www.tomshardware.com/reviews/radeon-hd-7870-revi...

It's a great card though. Both of them, get whatever fits better with your budget.

thanks