Here is an article that says the 9900 pro's core clock will be 420mhz http://www.xbitlabs.com/news/video/d...529150459.html whoever posted that the 9900 pro's core clock will be 375mhz is probly wrong because it would make no sense to make a new card that is the same speed as a 9800 pro. So if the 9900 pro's core clock is 420mhz then it will be faster than the 9800 pro