A couple of weeks ago, I heard from a friend that the powercolor 9800 Se can be softmoded to near 9800 levels because the card is identical to a 9800 pro but it has 4 pipelines disabled. I never softmoded anything before but I thought that I would try it and it work perfectly without artifacts. My 3d marks score was 5150 so basically I got a 9800 pro plus several games for 150 bucks. I dont think this works with other brands because my friend said specifically to buy the powercolor. Here is how to do the softmod
1) Download the Omega drivers 2.5.22 from omega homepage http://www.omegacorner.com/index_ati.html
2) When you start install the driver, you should pick the option "Soft-Mod 9800SE Omega Driver 9800SE -> 9800 NP/Pro/XT".
3) Actually, it is already unlock the other 4 pipelines when the driver finish installed. However, you cannot really tell from video properties. You should download riva tuner software http://download.guru3d.com/rivatuner/
4) After installed the riva tuner, you can see the 4 pipelines are already unlocked. (You need to responsible for your own risk!)
Good luck moding