28 Dec 2010 at 16:38 - 2
Unless you are using speakers in your monitor, there is no advantage to using HDMI over DVI.
But anyway, the black band is the result of a scaling factor setup in the Catalyst control panel, which is a real bitch to find. Lemme see (Win7)....
It varies depending upon OS and CCC version, but this is from mine:
Image Scaling for Monitors
Image scaling is performed by your monitor or GPU, and can be controlled by the Enable GPU scaling option. When the option is not selected (the default) and the current display mode is reported as supported in the monitor's EDID, image scaling is performed by the monitor. If the mode is unsupported, scaling is performed by the GPU.
If desired, you can specify a preference for GPU scaling by selecting Enable GPU scaling. Doing so ensures scaling is always performed by the GPU.
1. Based on the navigation system contained in the ATI Catalyst™ Control Center window, do one of the following:
* Navigation menu—From the display palette on the Desktops & Displays page, click the desired monitor, and then click Configure in the context menu that appears.
* Navigation tree—From the tree in the Graphics Settings tab, expand Monitor Properties.
2. Click Image Scaling.
3. Select Enable GPU scaling, and then select the desired setting:
* Maintain aspect ratio—Expands the current image to the size of the monitor while maintaining the aspect ratio of the original image.
* Scale image to full panel size—Expands the current image to the full size of the monitor for non-native resolutions.
* Use centered timings—Turns off image scaling and centers the current image for non-native resolutions. Black bars may appear around the image.
Images are scaled according to the selected option when GPU scaling is used.