You actually need a dual GPU video card to display different hi-res images. With a single GPU, you can do a 'split-screen' setup with two different images, but only in a static form, or with minimal activity. To get decent frame speed and image quality, only a dual GPU video card is the choice. Your version may not have that capacity. Going SLI may provide desired results. Windows does have the capacity to control two different video streams, but not a "resident" (built-in) feature. That is provided by the video card software.
F@H.. to solve mankind's maladies.. in our lifetimes!