Yesterday, I installed an AMD Radeon HD 6850 video card in my computer, to replace the Radeon HD 4870 video card that it had previously (and, during the time between my old card failing and the new one being delivered from Amazon.com, I used my motherboard's onboard Radeon HD 3300 video chipset), and while the video card functions perfectly well thus far, there has been one minor occurrence that I do not like.
When I installed the new video card, I connected my monitor to it using the same DVI cable that I had been using since I assembled the computer, but I then switched to using an HDMI cable that I had purchased in the same order as the video card, and while the monitor still displayed its recommended (and maximum) resolution of 1,920 X 1,080 pixels, the image was overall smaller, with a 1-inch black border around the screen, similar to the letterboxing that is often seen when playing a widescreen film on a fullscreen display, so I reverted to the DVI input, and the monitor did not have this problem.
I find this phenomenon to be very annoying, but I am not certain what may be causing it, so does anyone here have any advice on the situation? Thank you very much.