ok, one more question and now that i understand all of the other stuff, this shouldnt take long.
What is the memory for in graphics cards, what is stored in them. what does the core clock and the memory clock do?
GFX cards has a core; which can be thought of in a similar way as one would think of a CPU, and ram; which basically serves the same purpose.
Not sure EXACTLY what the ram on GFX cards store, but i believe it is all the data involved in generating the image you see; like textures and what not.