Yep that worked for me, said my GPU was a 5870 and not a "5800 Series".Then run the graphics tab of CPUz.
They're just different brands. ASUS and XFX make good cards, as do Sapphire.i notice when i searched up the gpu there were Asus Radeon 6850, XFX 6850 and so on... what does that mean and does it matter which one?
Consider this: A Radeon 7850, once OCed, can reach close to the levels of the GTX 580, and while using LESS power than a 6950.