For some reason, SLI doesn't seem to work in windowed mode. I disconnected 2 screens so that all 3 cards were powering 1 1080p monitor. Running the demo full screen gave these results :
FINAL FANTASY XIV: A Realm Reborn Official Benchmark (Character Creation)
Tested on:8/2/2013 9:15:09 PM
-Easily capable of running the game on the highest settings.
Screen Size: 1920x1080
Screen Mode: Full Screen
Graphics Presets: Maximum
-Enable HDR rendering and improve overall graphic quality. : Enabled
-Disable rendering of objects when not visible. (Occlusion Culling) : Disabled
-Use low-detail models on distant objects. (LOD) : Disabled
-Cache LOD data only when necessary. (LOD Streaming) : Disabled
-Real-time Reflections : High
-Edge Smoothing (Anti-aliasing) : FXAA
-Transparent Lighting Quality : High
-Grass Quality : High
-Self : Display
-Other NPCs : Display
-Use low-detail models on shadows. (LOD) : Disabled
-Shadow Resolution : High - 2048p
-Shadow Cascading : Best
-Shadow Softening : Strong
-Texture Filtering : Anisotropic
-Anisotropic Filtering : x16
-Self : Full
-Other NPCs : Full
-Naturally darken the edges of the screen. (Limb Darkening) : Enabled
-Blur the graphics around an object in motion. (Radial Blur) : Enabled
-Screen Space Ambient Occlusion : Strong
-Glare : Normal
-Enable depth of field. : Enabled
Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.130318-1532)
Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz < overclocked to 4.5GhHz
NVIDIA GeForce GTX TITAN(VRAM 1647 MB) 9.18.0013.2641 < X 3 cards
Benchmark results do not provide any guarantee FINAL FANTASY XIV: A Realm Reborn will run on your system.
FINAL FANTASY XIV: A Realm Reborn Official Website http://na.finalfantasyxiv.com
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I think I should be ok to run in surround full screen. Now that I know the issue.. some testing in window'd full resolution versus full resolution should be a good indicator that sli is working.
Thank you for all that offered help.