3DMAXX has tested out the recently found 128MB Radeon 9800XT BIOS with Radeon 9800NP/Pro based cards with great sucess. You may remember their article awhile back, well this is the conclusion. Everything is going sucessful and smothly. Several people have sucessfully flashed with the new 128MB BIOS and transformed their 9800NP/Pro into a full XT. This is also showing upto 10% performance gains clock for clock.
ATi 9800NP/Pro To XT Sucessful With New BIOS