I have an ASUS VE276Q monitor (as a second monitor) connected to an ATI Radeon HD 4670 graphics card (system is a couple years old). For some reason the monitor will only display up to 1776x1000 resolution. Looks great at that resolution, but of course there's roughly a 1-inch black border around the image. If I set the resolution to the native 1920x1080, then it's a slightly blurry 1920x1080 image scaled down to the same physical area as the 1776x1000 image (1-inch borders around).
Any ideas? I'm using the latest graphics driver on Windows 7 x64.