With the Ghz versions of popular Radeon cards floating about in the market, AMD is doing all they can to keep market share in the anticipation of the mass exit of Nvidia fans who have been waiting for the GTX660Ti release. The Red team is doing all they can to keep consumer interest on their side, including a recent BIOS update published for reference versions of the cards.
Unlike the update to the HD7970 to a GHz edition card, which merely involved a BIOS update and some power tweaking, or the HD7750 GHz edition which required extra power circuitry, the BIOS update available today gives
HD7950 owners a GHz card of their own for free, complete with higher default clock speeds and AMD's PowerTune Boost technology.