VGA means 640 x 480 pixels. Or 480 x 640 depending on the rotation of the screen. QVGA is 320 x 240 (X50, X30, X5 screens etc.)
But - with the X50v, although the screen is 640 x 480 and uses 640 x 480 pixels to display the today screen (for example), it's actually retaining the same size of the content on the screen. So look at your today screen as the X50v ships from the box. The image on your screen is the same relative size as it is on my 4150, but on yours you are using more pixels for each letter. This makes each letter smoother and better defined.
But - it seems that even though this is 640 x 480, some people have decided that it's not "true VGA" and that term is used to represent some of the hacks like SE_VGA which actually DO allow you to put more letters on the screen by using fewer pixels to depict each one.
So let's say that my 4150 used 10 pixels for the letter L. Your X50v by default uses 40 pixels to give a letter L of the same size but clearer. SE-VGA has your X50v use 10 pixels to display the letter L, but it's much smaller and therefore you get more on your screen.
So it's VGA. But "true VGA" just uses fewer pixels for each relative object and gives you more real estate on the screen by making everything smaller.
Hopefully I got that right
