what is 'dynamic' vram

[helios411]

Hi when playing games I noticed that in GPU-z when out of 'dedicated' memory it seems 'dynamic' memory is being filled. I thought that when you run out of vram your game may stutter. but I dont seem to experience too much of this when dedicated memory is full. What is this dynamic memory and how does it effect gaming?

thanks,

 

[digitaldoc]

http://tinyvga.com/faq/graphics-cards/what-is-the-difference-between-vram-and-dram