Geforce 8800GT is faster than RV670XT
 

We can now confirm that Geforce 8800GT will win against RV670XT, clocked at 825MHz with the DDR4 memory at 2400MHz. Nvidia’s chip is more powerful and faster in most of the games and synthetic benchmarks but at the same time the chip generates more heat, it's 65 nanometre and it is more expensive for Nvidia to make.

As a consumer you should not worry about these things but knowing how the new ATI thinks we can bet that RV670XT / PRO and GT will end up cheaper than Nvidia prices and this will be the way to fight Nvidia.
http://www.fudzilla.com/index.php?op...69&Ite mid=34