If there is one thing that ATI certainly can do it's produce a wide range of models to suit all pockets and applications. From the very baseline 5670 to the hugely powerful and equally expensive 5970.For a long it's been held that the top end of the lower range is better than the bottom of the next one up. For example a 4770 is preferable to a 4830. HIS are hoping that their custom-cooled Turbo variant of the 5830 stops this trend.This is also the final model in the current ATI line-up for us to review, so we will be able to see exactly where it slots into the market.