The Great HDCP Fiasco - ATI/NVIDIA do not fully support Windows VISTA

@ 2006/02/13
You want to know a secret? None of the current ATI or NVIDIA graphics cards will support the full capabilities of Windows Vista. HDCP stands for High-bandwidth Digital Content Protection and is an Intel-initiated program that was developed with Silicon Image. This content protection system is mandatory for high-definition playback of HD-DVD or Blu-Ray discs. If you want to watch movies at 1980x1080, your system will need to support HDCP. If you don’t have HDCP support, you’ll only get a quarter of the resolution. A 75% loss in pixel density is a pretty big deal – Wouldn’t you be angry if your car was advertised as doing 16 mpg, and you only got 4 mpg? Or if you bought a 2 GHz CPU and found out that it only ran at 500 MHz?
Comment from jmke @ 2006/02/13
Another striking quote:

We’ve been able to confirm that none of the Built-by-ATI Radeons support HDCP. If you’ve just spent $1000 on a pair of Radeon X1900 XT graphics cards expecting to be able to playback HD-DVD or Blu-Ray movies at 1920x1080 resolution in the future, you’ve just wasted your money.

NVIDIA, being a GPU manufacturer was unable to discuss the plans of board manufacturers. We contacted all six of NVIDIA’s Tier-1 board partners. None of the GeForce 6 or 7 video cards available on the market, including the most recently released GeForce 7800GS, have HDCP support. So if you just spent $1500 on a pair of 7800GTX 512MB GPUs expecting to be able to play 1920x1080 HD-DVD or Blu-Ray movies in the future, you’ve just wasted your money.