I bought this card to replace and upgrade from the 9800gt from xfx, i thought i would risk it although there is not fundamenatlly much difference apart from a dual slot cololer. How wrong was i! The card is a dual slot card but the fan provided on this card is millions better than that on the 9800gt which will benefit all overclockers out there, i overclocked mine after a straight swapout with my 9800gt and the score previously was around 12500 and went up to over 14000 which is a big jump and still the fan was quieter than the 9800gt.
The price of these cards now are cheap and you should look out for a bargain as they perform really well, the packaging as usual from xfx is great really reassuring that they don't want the item damaged and that it is something special, the software package is good and user friendly however i use rivatuner for overclocking it.
The increase in demand from the power supply could incur extra costs but if you are upgrading from a card similar to the 9800gt you should be ok.
I will definatley recommend this card however the way graphics card producers go there is probably now a card twice as fast and half the price so shop carefully.