Zone Rendering technology ensures the most efficient memory usage, for optimal graphics and system performance. Zone Rendering reduces the system memory bandwidth required to draw each scene, which eliminates the need for local graphics memory.

A 3D graphics engine divides the frame buffer into rectangular zones, then sorts all the triangles into memory by zone. The graphics engine then processes the zone completely, writing the pixel data to memory. Once that is complete, the graphics engine moves on to the next zone.

An internal rendering cache sorts the 3D workload into zones, and the graphics engine draws each pixel in a scene - one at a time - to create more realistic images.

(Zone Rendering Technology white paper)