Adrian's Rojak Pot has posted rev. 5.0 of the Radeon 9800 Pro To Radeon 9800XT Mod Guide
Even with the introduction of a new class of GPUs from ATI and NVIDIA, your Radeon 9800 Pro card is still something to be reckoned with! In fact, many Radeon 9800 Pro cards can be given a further boost in performance by modding them into full Radeon 9800XT cards!Read more
Check out Chai's comprehensive guide on modding the Radeon 9800 Pro into a Radeon 9800XT! It will teach you everything you need to know about identifying moddable Radeon 9800 Pro cards, how to mod them and which BIOS to use!