Depends on the game. I have the 650m with the same resolution, and I'm playing Skyrim at max resolution, with all the FXAA and stuff enabled at max (with the high res pack). I don't know about some of the other games, but expect medium to ultra with any game on the market.
The nVidia GT 650m is a very capable graphics card. Click following link for benchmarks, and hover the mouse over the graphic settings "Low", "Medium", "High", and "Ultra" to find out what resolution and settings were used for the benchmarks because it differs from game to game. "Low" can be 800x600 resolution. "Ultra" is typically 1920x1080 resolution.