7950=280
7970=280x
What do you mean with 7950/ 7970? Sorry for the nooby question. Im still learning..
280/x are rebranded 7950/70. Really good space heaters if you need one.
Not quite identical, but partly so.
The R9 series had slightly faster RAM by default, and some upgraded to the BIOS.
The actual GPU chip appears to have been identical in these specific cases though except perhaps for markings ON the chip.
If you want good space heaters, you have to go to the HD 7990, the R9 295x, or in a pinch the R9 290 and R9 290x cards.
9-)