VR-Zone has posted a review on the Sapphire Atlantis Radeon 9800 Pro video card

Overclocking the Radeon 9800 Pro provided probably the biggest surprise throughout the whole review process, because I was not expecting much after the meager results I achieved with the Sapphire 9700 Pro a few months back. From a default clock speed of 378/338 Mhz, I was able to overclock the card to 472/370 Mhz, higher than any other Radeon 9800 Pro card tested here at VR-Zone Hardware. This was the absolute sweet spot as I'd like to call it, with flawless performance throughout testing and no distortion in games even after running for a couple of hours. The memory clock was almost locked at 370 Mhz as I could not achieve anything higher than 370, but the core clock speed was the most surprising of all, able to run at 472 Mhz without a problem, an increase of 92 Mhz!