PerformanceTest can't find 3D video card on Dell XPS L501X laptop

[DeMarcos]

When I run PerformanceTest on my Dell XPS L501X laptop it can't find the installed 3D video card, a NVIDIA GeForce GT 420M, so it just uses the onboard Intel HD video for the test. In addition, you can not select the NVIDIA card in the "Advanced" video card settings area. What do I need to do?

[David (PassMark)]

See this FAQ

Q. Does PerformanceTest support NVIDIA Optimus?

[DeMarcos]

See this FAQ

Q. Does PerformanceTest support NVIDIA Optimus?

Thanks that worked! However, it only used one of my two card SLI setup. Is there any way to tell to use both cards?

[David (PassMark)]

Wouldn't help. SLI doesn't provide any performance advantage in V7 of PerformanceTest (due to device driver issues).