> Both images were the same pixel width and height on the screen, but one was half a megabyte and the other 2.5 megabytes.
What where the original image sizes on import?
The original size was 800 x 600, and in the editor where this file was originally created, the file properties show it as 800 x 600 and 705 kb (kilobytes) in size.
Using the math provided, that would be 800 x 600 x 4 = 1920000.
That is 1920 kb, so 1.92 mb.
So why when i delete it from the game, the total memory usage drops 2.6 mb
1.92, in theory for this image, creates a 2.6 mb drop in the game when it's deleted.