Q: Final Cut Pro X will not let me buy it saying I don't have the right video card?

This is the list fo supported graphics cards:

• NVIDIA
  • GeForce 320M
  • GeForce GT 330M
  • GeForce 9400M
  • GeForce 9600M GT
  • GeForce 8600M GT 128MB (Note: OpenCL compatible, but does not meet system requirements for Final Cut Pro X, Motion 5 and Compressor 4.)
    
  • GeForce 8600M GT 256MB
  • GeForce 8600M GT 512MB
  • GeForce GT 120
  • GeForce GT 130
  • GeForce GTX 285
  • GeForce 8800 GT
  • GeForce 8800 GS
  • Quadro FX 4800
  • Quadro FX5600
• ATI
  • Radeon HD 4670
  • Radeon HD 4850
  • Radeon HD 4870
  • Radeon HD 5670
  • Radeon HD 5750
  • Radeon HD 5770
  • Radeon HD 5870
• AMD
  • Radeon HD 6750M
  • Radeon HD 6630M
  • Radeon HD 6770M
  • Radeon HD 6970M

http://www.macrumors.com/2010/08/24/apples-ati-radeon-hd-5870-works-in-2008-mac- pro/

What fox_m said.

My ATI Radeon HD 2600 Pro works fine but isn't on that list?

Is the list incomplete?

I have just investigated and my ATI Radeon HD 2600 Pro is listed with a bunch of others which have this message above them:-

The following graphics cards are not OpenCL compatible and do not meet the OpenCL compatible graphics card system requirement for Final Cut Pro X, Motion 5, and Compressor 4.

So how come it works perfectly with all 3 apps?

Because you're special Ian.