This would have to be the most beastly X1950XTX offering to hit the market, SAPPHIRE have just launched their "TOXIC" series X1950XTX which sports a kickarse water cooling solution and the "Automatic Performance Enhancer" software which allows you to easily bump up the core clock speed to 695MHz for some mega blitzen' performance.
Grab the press release here for full details folks.
The exciting new SAPPHIRE TOXIC X1950XTX is the new top performing graphics accelerator from Sapphire. Shipping with the product is the A.P.E. - Automatic Performance Enhancer - which uplifts the core clock speed to 695MHz making the card the fastest card on the planet! The highly efficient cooling system also will allow enthusiasts to further enhance performance by overclocking with other tools. Together with the Limited Edition TOXIC CrossFire Edition, which has the same core and memory speeds, the ability to run overclocked dual GPU configurations offers previously unachievable CrossFire performance.