Setup: Dell 8300 with ATI Radeon HD 5670 and ST232L monitor.
Video card to monitor connection:
VGA cable connection looks very good and fill screen (23" diag).
HDMI cable connection looks not a good and does not fill screen (~21" diag).
Monitor - video card are auto detecting to the correct cable. Resolution in both cases is 1920 x 1080 (reommended).
Any idea what I am doing wrong?