Video Memory is memory on the video card itself not to be confused with normal system memory also called RAM. Both types of memory provide a totally different function. Video Memory is located on the graphics card. Its function is to store images as they are processed, accelerating processing time by freeing RAM and the processor to perform other tasks. Unlike RAM video memory is not upgradeable. You may also see something called shared video memory. This is where the video memory also uses some of the system memory to perform its tasks. If you are a gamer or are doing heavy graphics rendering. Video memory is going to be key in the choosing of your laptop. Please check each program you are planning on running to see what the program recommends then try to exceed that recommendation.