Thanks for the quick response. Read RGB 4:4:4 as RGB Full and RGB 4:2:2 as RGB Limited then. The broken Pixel Format menu of CCC (ATI's control panel) refers to the non-subsampled versions of YCC and RGB as 4:4:4, so I'm just quoting them.

I'm not really concerned about video content which I know is of lesser color, but desktop and game content. There's a very obvious difference between RGB Limited and RGB Full when on the desktop or playing a PC game. If you want to see ATI's broken HDMI color in action, check out these photos of my display taken of a test pattern of vertical red lines. The first is with an HDMI to HDMI connection (subsampled no matter what the pixel format setting), the second with a DVI to HDMI connection using the DVI port of my 5850:
http://img843.imageshack.us/img843/8782/failed444.jpg
http://img213.imageshack.us/img213/5999/proper444.jpg
It's very noticeable for PC content :/
Anyway, thanks, looks like I'll be jumping ship soon.

I'm not really concerned about video content which I know is of lesser color, but desktop and game content. There's a very obvious difference between RGB Limited and RGB Full when on the desktop or playing a PC game. If you want to see ATI's broken HDMI color in action, check out these photos of my display taken of a test pattern of vertical red lines. The first is with an HDMI to HDMI connection (subsampled no matter what the pixel format setting), the second with a DVI to HDMI connection using the DVI port of my 5850:
http://img843.imageshack.us/img843/8782/failed444.jpg
http://img213.imageshack.us/img213/5999/proper444.jpg
It's very noticeable for PC content :/
Anyway, thanks, looks like I'll be jumping ship soon.


















) I'll try again for tomorrow and see what happens.