1st thing, great card for the money!
However, I don't buy Tom's opinion of the Nvidia rebranding rumours having perhaps a little more truth behind them. Nvidia have been late to this new GPU generation party with AMD's offerings out months before. That costs them in the pocket. The 690 is based on 2x680's as expected and this level of development requires time and money to change mid flow if the rumours were true. I don't believe the generation speed gain has been insignificant, which is another reason to disbelieve the rumours over the 7970's being underwhelming. Opinions are opinions though
Nvidias 'other' chip was to be 680 card will more than likely go straight into thier professional range of graphics cards, in my opinion, as they always were going to.
I also feel the 7950 has more headroom and ultimate speed, when overclocked, than this 670 in it's current form and a higher performer. With Sapphires cooler on it, much cooler operation too. 7950's have been available for a while now...
No I'm not a fanboy, just have to state facts as they are though.
Still £300 buys decent performance again at last