This fall, I am looking to possible upgrade my CPU and video card. I would like to upgrade my CPU to a Phenom II 945 and I'm sure I could power that just fine with my current setup. However, concerning a graphics card upgrade, I am not sure what to pick.
I was thinking of getting a Sapphire HD 6850 but am unsure if I could power it. Preferrably though, I would like a 6870 but again, I don't know how much stress this will cause my PSU.
If neither of these cards is acceptable by my PSU, are there any GPU upgrades you guys could recommend that I could safely run?