Batman: Arkham City
We did a little Batman-style free running through the rooftops of Gotham for this one.
All of the plots for this game show lots of spikes, or occasional long frame times, something we're used to seeing from Arkham City—doesn't seem to matter much whether you're dealing with one GPU or two.
The AMD and Nvidia offerings are much more competitive with one another here than they were in Skyrim, at least in the FPS sweeps.
Switching to the 99th percentile frame times whittles away the gap between the multi-GPU solutions and their single-chip equivalents. The GTX 690 still looks good here, but it's no quicker than a pair of 7970s.
Although all of the solutions had spiky lines in the initial plots of frame times, the latency curve illustrates how two of the solutions, the single Radeon HD 7970 and the Radeon HD 6990, produce a higher proportion of long-latency frames than everything else. Again, the 6990's sharper rise from the halfway point to about 88% suggests some longer frame times as part of a micro-stuttering pattern. However, the single 7970 struggles mightily with that last 7% of frames, all of which take longer than 60 milliseconds to render. Interestingly, in this case, adding a second card for CrossFire essentially eliminates those struggles.
The GTX 690 again looks excellent throughout, even surpassing the 7970 CrossFire config.
In this test scenario, with either Radeons or GeForces, you can substantially reduce slowdowns by adding a second GPU. That's true for the GTX 680/690, and it's true for the Radeon HD 7970, as well. The multi-GPU options look pretty darned good in that light.
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