Combining two video cards with SLI allows for large leaps in performance in 3D Mark 2006 fill rate tests. In fill rate multi-texturing tests the results of the SLI 8800 GTX setup are actually double that of a single card meaning 100% scalability going from one to two cards.

We get similar results in the pixel and vertex shader tests. The use of SLI technology doubles performance, as can be seen with the GeForce 7900 GTX.

In the Perlin Noise benchmark, which was initially released in the 2005 version of 3D Mark, the SLI setups again are able to reach almost perfect scalability.

Shadermark 2.1 shows an interesting view of the tested cards’ performances. The GeForce 8800 architectures display the highest overall performance. Oddly, the ATI solutions at times show lesser performances with two cards compared to a single card configuration. This is most evident at 19 on the graph.