How do I know if my SLI is working?

[RyanJ20]

I've had 2 Nvidia GeForce GTX 780s for awhile now, and when I enable SLI I cannot see any difference in performance what so ever. How do I know if it is working correctly?

 

[clutchc]

There is a SLI indicator in the Nvidia Control Panel you can enable. When SLI is active, it will display a graph-like indication on the screen.

Btw, SLI is only active when a SLI-aware game is using SLI.

 

[photonboy]

Run a BENCHMARK utility which is SLI capable both with and without SLI enabled and compare scores.

Can probably use a "3DMark Vantage" benchmark DEMO through Steam. It will be in the "software" section of Steam once installed.

 

[clutchc]

Same with Furmark. It should show 2 GPUs being active on the temp graph.