If you flash the BIOS to 9700 Pro, it will run at 9700 Pro clock speed by default. If you simply hack the BIOS to allow overclocks, you can run it at Pro speed using a software overclocker.
In fact, before you flash it to 9700 Pro, I suggest making sure it runs perfectly at that speed by applying the BIOS hack and software overclocking it.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>