The softmod actually turns it into a regular 9800, not a 9800Pro. Although if the core and memory can take it, you can overclock it to 9800Pro speeds after activating the other pipelines.
Any card with 256-bit memory (which the Powercolor ones seem to have) has a chance at actually having 8 working pipes. The success rate is apparently not terrific, although someone posted a few weeks back in the Video forum about doing it successfully.