PCI Express Scaling Game Performance Analysis review - Performance - 2-way SLI GPU - BioShock Infinite

GeForce GTX 980 2-way SLI DX11: BioShock Infinite

BioShock Infinite is a first-person shooter video game and the third instalment in the BioShock series. Previously known as "Project Icarus", it was developed by Irrational Games and was released worldwide on the Microsoft Windows, PlayStation 3, and Xbox 360 platforms on March 26, 2013. BioShock Infinite is not part of the story-line of previous BioShock games but definitely features similar gameplay concepts and themes. The retail Windows version accommodates higher-resolution textures beyond the console versions, and supports video cards capable of running DirectX 11 in addition to DirectX 10, allowing for further graphical improvements to the game. 

We test BioShock Infinite at:

• DirectX 11
• Ultra Quality mode with DDOD enabled
• FXAA enabled

We are testing at 2560x1440 (WHQD). With an exception here and there, this is roughly what you will see in terms of performance difference, from Gen 1.1 to 3.0 that is 13 FPS on average. From Gen 2.0 to 3.0 that is 5 FPS.

Frametime Recording

• Grey line - GTX 980 @ x16 Gen 1.1
• Dark green line - GTX 980 @ x16 Gen 2.0
• Light green line - GTX 980 @ x16 Gen 3.0

The stutters you see are mostly scene changes, but as you guys know the internal benchmark can also stutter a bit. We again spread out the 57 second benchmark recording and then overlay latency results from the difference generation PCIE slots (lower latency - better) we can see a hint better as to what you are seeing on screen.  The latency differences in-between the 2.0 and 3.0 PCIE Slot configurations are relatively small.