Quote Originally Posted by JumpingJack View Post
It isn't, that's the fault in your argument -- texture and vertices are stored in VRAM -- this is called precaching -- so you may experience better level loading times, but during actual game play the bulk of the massive slug of data is kept in very fast memory next to the GPU with a very fast BW connection (due to the necessary high throughput).

The data communicated between the card and CPU is only the command buffer which, in part, contains the pointers to the textures in VRAM... it is a very small data set relatively speaking.

On top of that, PCIe 2.0 enables bus mastering, so to access the command buffer the GPU does not go through the FSB in the Intel platform, it simply masters straight to system ram.

Jack
so the cpu doesnt communicate with it's own memory through the FSB?
common jack

it goes like this cpu --> FSB --> NB --> memory