Recently bought two 7950 from Gigabyte with 3 fans, run great, both on 1050 Mhz, doing 555 Mhs, default vcore.
For mining and occasional gaming.
similar here - but as its winter i run up to 1100mh/s and they are currently on 64*C and peaking at 600mh/s.
I also use them for gaming - so BTC is basically a hobby and a way to pay for some of the initial cost of my hardware upgrades.