II've just bought and installed Gigabyte HD 7770 AMD Radeon 1GB DDR5 graphic card. I installed the software from the producent CD. Unfortunately the drivers didn' work properly. My monitor's native resolution is 1680x1050, but it wasn't avaliable in screen setup. So I installed Crimson drivers from AMD website. Still no 1680x1050 resolution. Finally I installed amd-catalyst-15.7.1-win10-64bit drivers and this worked fine. How come that the latest drivers from AMD website don't work?
If you are using the Crimson drivers, you'll need to use Windows Display Properties to adjust the resolution.