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Question about NVIDIA GTX 660m Optimus?

post #1 of 3
Thread Starter 
Hey, guys, I have a questions about Optimus.

I got this lovely laptop Lenovo IdeaPad Y580 which it has GTX 660m, and it is awesome.
However, I don't quite understand how Optimus work.
I know it disable your dedicated GPU and use your integrated GPU to save battery life, but I am not sure how it will turn it on.

I mean, like, when I start playing CS:S on it, it register as Intel HD 4000 rather GTX 660m which is odd. Even though Intel HD 4000 can run CS:S perfectly, I don't know if Optimus use my IGP on lower-end games like CS:S, TF2 and other games and use my dedicated GPU on higher-end games.
Can you guys help me clarify it?
I am totally confused frown.gif
     
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CPUMotherboardGraphicsRAM
Intel(R) Core(TM) i5-2500K  P8Z68-V LX Galaxy Geforce GTX 670 Kingston 8GB RAM  
Hard DriveHard DriveHard DriveOS
SanDisk SDSSDP-064G-G25 OCZ Vertex 450 128GB WD 1TB HDD 5400 RPM Windows 8 Pro 64-bit 
MonitorMonitorKeyboardPower
Dell e2414h monitor  Vizio VO22LFHDTV10A 22" Logitech G710+ Corsair HX750 
CaseMouseMouse PadAudio
CM Storm Enforcer Logitech G700s Logitech Soft Cloth Mouse pad Sennheiser HD 558 
Audio
Creative Sound Blaster Z 
CPUGraphicsRAMHard Drive
Intel Core i7 3630m NVIDIA GeForce GTX 660m 2GB 6GB RAM MyDigitalSSD mSATA 240GB 
Hard DriveOS
750GB HDD Windows 8  
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post #2 of 3
There is a setting in the nvidia control panel that lets you specify that you would prefer the dedicated card instead of the onboard.

My ex got that same laptop and had the same issue with sims not using the 660m, there is an option that makes it prefer to use the dedicated card, not sure where in the control panel. I think you can also set it per program as well, just like setting the 3d settings per program.
post #3 of 3
I had this problem.
  • Like the poster above said, make sure you set the NVIDIA manager to prefer the high-speed graphics.
  • Make sure your power mode is set to high performance
  • Some games require additional tweaking with various programs (such as Just Cause 2). If you plan on using an ENB for any reason, use this coupled with a wrapper version.
    
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Hard DriveCoolingCoolingOS
Seagate Barracuda Corsair SP120 QE x4 Corsair AF140 QE x2 Windows 8 
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LG 23EA63V-P 23" IPS Corsair AX650 Corsair 350D Windowed NZXT Sentry Mesh Fan Controller 
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