CrossFire™ Overview 105
Alternate Frame Rendering (AFR) Mode
In this mode, all even frames are rendered on one GPU, while all odd frames are rendered on the other. The completed frames from both GPUs
are sent to the Compositing Engine on the CrossFire™ Edition card, which then sends them on to the display. By allowing both GPUs to work independently, AFR provides the greatest potential performance improvements of all the available modes. It is also the only mode that allows the full vertex processing performance of both GPUs to be combined.
1PCI Express® CrossFire™ Compatible Graphics Card
2Radeon® X1650 PRO CrossFire™ Edition Graphics Card
3Partial Frame Rendered on PCI Express® CrossFire™ Compatible Graphics Card
4Partial Frame Rendered on PCI Express® CrossFire™ Edition Graphics Card
5Final Rendered Frame on Display
The main limitation of this mode is that it cannot be used in applications where the appearance of the current frame is dependent upon data generated in previous frames, since AFR generates successive frames simultaneously on different GPUs. In these cases, the SuperTiling or Scissor Mode is used instead.
