When I was looking around for monitors I seen several that said they would do 1920x1080. Some of them said they would do 1080p and others did not say. If both would do the same resolution what is the difference? I noticed that my GeForce4 MX 4000 would do 1920x1080 but it does not say it will do 1080p or 720p, it just says it will do HD.