VR Features

Testing the performance of Discrete Graphics allows us to see if there is a negative impact on the system performance from having the Integrated Graphics on the chipset. At the same time, we're also testing the performance improvement from activating Geforce Boost, if any.
Note that as Hybrid Power would turn off the discrete accelerator when idling, the display has to be connected to the integrated graphics accelerator. Unfortunately, this also means that the output is limited to the resolution of a single-link DVI (1920 x 1080) at the moment. Similarly, when used in Geforce Boost configuration, we were only able to get the display to work on the IGP's output.

In order for Hybrid Power and/ or Geforce Boost to work, you will need to forcefully enable onboard graphics; otherwise, the integrated graphics solution will be disabled upon detecting the discrete accelerator. This is done via BIOS settings on the Palit N78S board:

Currently, toggling between Hybrid Power and Geforce Boost has to be done manually. This can be done by clicking on a taskbar Icon. Alternatively, the Control Panel Power Configuration Options can be used to automatically disable the discrete GPU when idling.

 Synthetic Benchmarks

Hybrid SLI offers a small improvement of 74 points in 3DMark 06.

It's interesting to note that leaving the IGP activated actually takes a toll on system performance; more than the graphics benefits reaped.