HiS Radeon X1650 PRO review
The Radeon X1650 Pro utilizes the ATI RV535 graphics core, a new revision of the RV530 which was the basis of the X1600 series. What's new then you are asking ? Uhm, well nothing except a newer 80nm fabrication process. That 80nm process ensures cheaper production of the silicon and more importantly less heat and likely lower graphics core voltages. That means you can clock the core faster, which was done quite insignificantly for this model but the increase is there.