# Difference in pixels between different monitors' sizes

1. If I have an image of x/y resolution and display it on a monitor, does this mean that between a 15-inch monitor and a 42-inch, the same amount of pixels (x/y) will be displayed, only that each pixel will be of different size?

2. In relation to my first question, if I connect a 25-inch monitor or a 13-inch monitor to a computer, will the GPU/CPU work harder when connected to the 25 inch one? Could there be more lags on the bigger screen, or is it simply a matter of pixels' stretching?

Ad 2) No, the physical size of a monitor makes no difference for the GPU. It only cares about the resolution, for example 1920x1080 vs 3840x2160. The latter has 4 times the number of pixels, so it requires 4x the amount of memory and a simple operation like glClear might take 4 times longer to complete. More complex operations might even be slower than that, due to their implementation details.