There's two possible causes:
1) Your monitor. By default, Nvidia's control panel leaves scaling up to the monitor, so this is the most likely cause. Mess around with the monitor's menu and see how it handles scaling.
2) Your driver. In the Nvidia control panel, look for "Adjust desktop size and position" and try "No scaling". I think that "GPU" has to be selected under "Perform scaling on..." for this to work.
Of course, the best solution for this problem would be the widescreen mod
"They should rename the team to the Washington Government Sucks. Put Obama on the helmet. Line the entire walls of the stadium with the actual text of the ACA.
Fix their home team score on the board to the debt clock, they can win every game 17,000,000,000,000 to 24. Losing team gets taxed by the IRS 100%, then droned."