well, it is, and I find the solution, that is not the "right" solution but it works perfectly right now, I'd just hope that AMD do something with the drivers to fix this issue
ok, so I don't if this a bug in the drivers or my monitor is not the right kind...
but when I try to plug my monitor through the HDMI port in the video card, the crimson drivers sets the pixel format to YCbCr 4:4:4 pixel format that is not the right setting, cuz the desktop looks good and video playback too, but when I open a game or try to stress the video using 3Dmark11, the screen gets all pixelated but much worst than that, the colors are not right and you can barely see through the pixels, so the settings should be set to RGB 4:4:4 Pixel format PC standard for it to work perfectly, but you can't choose this option using the HDMI port, so I've use a DVI to HDMI adapter to use the DVI port in the video card, by doing so you can now choose RGB 4:4:4 Pixel format PC standard and everythings works fine now...
I don't where to fill up a bug report so if someone can redirect this to someone that can fix the problem???