I was surprised to see in Windows 7 on my Mac Pro in the latest AMD Catalyst drivers for the 5870 that AMD Overdrive is available on the 5870 despite the one in the Mac Pro being an Apple firmware. And Apple is not like Asus or Gigabyte that encourages the OC community. This seems a very strange feature for Apple to allow on a Mac Pro. I can't see AMD being able to dictate to Apple that they must enable to option. Is this an oversight on Apple's part or is Apple actually cool with it?