Whats the difference between the 9700 and the 9700 PRO??

Ok, after looking on Pricewatch I see two versions of the 9700 listed, one PRO the other normal. So, I go to the ATI site to see the diference between the two and I just find info on the 9700 but no PRO!
So, whats the difference? There is a BIG price difference!

There are usually two differences: clockspeeds and RAM ratings. 9700 non-pro cards are clocked at 275/540, while Pro cards are clocked at 325/310 (IIRC - correct me if I'm wrong). Many non-pros come with RAM that's rated at 3.3ns - not enough to make the 310mhz cut. However, there are still quite a few 9700nps that have 2.8ns RAM, which would effectively give you a Pro after some overclocking.