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Why is my GPU running at full performance all the time?

Question

 

 

Notice the GPU gague below. It is always maxed out as shown below (except for when external monitor is used).

 

I think this is a problem. I noticed this as I noticed that my battery seemed to be draining more quickly than it should.

 

 

screen capture

 

My machine is a T520

 

Microsoft Windows 7 Professional

Version 6.1.7601 Service Pack 1 Build 7601

Manufacturer LENOVO

System Model423926U

System Typex64-based PC

ProcessorIntel(R) Core(TM) i7-2620M CPU @ 2.70GHz, 2701 Mhz, 2 Core(s), 4 Logical Processor(s)

BIOS Version/DateLENOVO 8AET49WW (1.29 ), 7/11/2011

SMBIOS Version2.6

Hardware Abstraction LayerVersion = "6.1.7601.17514"

Installed Physical Memory (RAM)8.00 GB

Total Physical Memory7.89 GB

Available Physical Memory4.72 GB

Total Virtual Memory15.8 GB

Available Virtual Memory12.0 GB

Page File Space7.89 GB

Answer

Run this:
http://techiestalk.com/download-nvidia-optimus-test-tools-gpu-state-viewer-graphic-for-windows-7-3264bi.html

It'll tell you which program is using the discrete graphics card.

After identifying it, right click the program, Run on Graphics Processor, set default processor. This takes you to the NVidia control panel, where you can then add a rule for the program in question and force it to run on the integrated card. Just add an exclusion rule and all is happy.

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