The Cloud Gate scene from 3DMark doesn’t reveal the full potential of the two Titans, but the other two scenes respond eagerly to the doubled capacity of the graphics subsystem. There’s a 63% performance boost in Fire Strike compared to the single Titan. In Fire Strike Extreme, the number amounts to 74%. The 2-way SLI technology isn’t at its maximum efficiency here, yet the results are good anyway. We can also note that the Zotac is 2-3% ahead of the reference GTX Titan from Nvidia.
Unigine Valley Bench
The efficiency of SLI as applied to two GeForce GTX Titan cards depends on the graphics quality settings here. Without antialiasing, we only get a 33% performance boost. But when we turn 8x antialiasing on, we get as much as 80%! The difference between the pre-overclocked Zotac and the reference Nvidia is small again.
Metro 2033: The Last Refuge
Released back in March 2010, Metro 2033: The Last Refuge can still use up all the resources of such premium graphics subsystems as our 2-way GeForce GTX Titan SLI. That’s why the SLI efficiency is as high as 90%. The Zotac GeForce GTX Titan AMP! Edition is 2 to 6% ahead of the Nvidia GeForce GTX Titan in this game.
Total War: Shogun 2 – Fall of the Samurai
Adding a second Titan to the first one results in a substantial performance boost in this game: up to 85-93% at the 8x MSAA settings.