I bought a Fujitsu Lifebook AH532 laptop yesterday. Before buying it, I was told it has a GeForce GT640 graphics card installed, but when I started it and ran AIDA64 it showed me 4 graphics adapters, 3 from Intel and 1 from nVidia.

Video adapters

I then ran a benchmark in GTA IV, and the used graphics device was Intel's, not the nVidia.

What does it mean to have 4 adapters, and how do they function?

  • Which laptop model ? – Hennes Sep 20 '13 at 11:31
  • Fujitsu Lifebook AH532 – ItsGreg Sep 20 '13 at 11:43
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    Its simple. Because there are 4 ports. 3 are managed by the Indel HD Graphics 4000 and last one handled by the GeForce GT 6400M. VGA, HDMI, and the XGA HD display. I can't find a specification on the model you have, I found the manual, but makes no reference to the Nvidia card. Why AIDA64 does this I can't explain, thats a closed source application, but 3 of the 4 can be displayed by the ports so simplest explaination normally is the explaination. You really only have 2, if you want GTAIV to use your NVidia card you might want to configure your laptop to use that instead. – Ramhound Sep 20 '13 at 11:49
  • Can you elaborate please? What do you mean, 4 ports? So when I'm playing games, are they handled by the Intel HD Graphics, or nVidia GT640? – ItsGreg Sep 20 '13 at 11:52
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    The laptop only has a VGA and a HDMI port. But I have figured it out. It turns out it's a power saving laptop, so whenever there's no need for a higher performance graphics it uses the Intel HD Graphics, and when I run anything that need better graphics, the nVidia is used. I still don't understand why there are 3 adapters for Intel though. – ItsGreg Sep 20 '13 at 12:52

Your laptop has 2 hardware GPU chips - Intel HD Graphics 4000 and the Nvidia GT 6400.

As you pointed out the driver will switch in between based on performance requirements.

What you see in the control panel are all of the virtual instances running. I believe each one is assign to an output:

1x HDMI 1x VGA 1x WiDi (Intel wireless Display for connecting to TVs)

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