With so much horsepower under the hood and with all the graphics memory available on graphics cards like these it would be a shame not to test multi-monitor performance. Hence we setup three Dell LCD screens and combined three 1920x1080 monitors towards a resolution of 5760x1080. These days all modern game titles can handle gaming on three monitors, whether or not it is your thing in terms of rendering power needed and stuff like bezels in-between the screens, I'll leave up to you to form an opinion about.
With three monitors we pass 6 MPixels that need to be rendered which is a huge task for any graphics card. At this point if at all you are using AA, your graphics card will need to have 2 GB of graphics memory at minimum. Well with GeForce GTX 780 you get 3GB per card, so I woudn't worry about that though.
Oh and if you figured 6 sets of PCI Express power connectors were the end of it, we now add three monitor connectors as well. For the SurroundView mode at a monitor resolution of 5760x1080 we take six games from our benchmark suite and fire off the following cards and combinations:
GeForce GTX 680
GeForce GTX 690
Radeon HD 7970 GHz
ARES II Crossfire (4 GPUs)
GeForce GTX 780
GeForce GTX 780 SLI
GeForce GTX Titan
GeForce GTX Titan 2-Way SLI
GeForce GTX Titan 3-Way SLI
Far Cry 3
Very High-quality DX11 mode
2x MSAA (Anti-aliasing)
16x AF (Anisotropic Filtering).
Far Cry 3 - As you can see Titan SLI confiurations lead the pack here. The dual 7970 ARES II in Crossfire (4GPU caves in due to driver issues). A single 780 is gaining in performance compared to the GTX 690, with its 3GB framebuffer it is crawling upwards in performance slowly but steadily. GeForce GTX 780 SLI, 59 FPS ... nice.
Medal of Honor Warfighter
Medal of Honor Warfighter - Ultra Quality mode and 4xMSAA with DX11 is activated. Again we see the Titan take a nice lead. A quick sidenote on the ARES II - unfortunately Eyefinity in combination with 4 GPUs became very unstable making the game crash and was showing abnormal low framerates, hence the weird ARES II 4 GPU Crossfire result. We've seen this often, 4GPUs is just not recommended.
A single 780 is already fine in terms of needed performance, at 43 FPS in this resolution you should be a happy man considering we apply 4xMSAA at monitor resolution of 5760x1080. 2 -way SLI scales pretty nicely though.
High Quality settings
Internal benchmark used
Hitman Absolution was my favorite game in December alongside MOH Warfighter. Unfortunately we have hit a that weird bottleneck as already explained in the previous sessions. 2-way SLI still offers 'okay' scaling.
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