Integrated mode VS Optimus : Same GPU used but FPS cap?

[goji]

Hello, i noticed while testing a W520 that when running on integrated graphics only mode, i get 160fps in source games and when i run optimus (i checked and launching source games turn on nvidia gpu) i get only 60fps on the same game, and same power plan.. There's FPS cap somewhere but i can't find the setting.. Anyone know about this? Thanks in advance.

[goji]

Come on, somebody must got informations on this..

[tudoranadi]

That's probably because of Vertical Sync settings. It is always on.
It reduces the FPS to display's refresh rate which is 60 hz.
Disable Vertical Sync and you'll solve the problem.

[goji]

I thought so first but it's not! Wouldn't have made up this thread if it was..

[Sleepy664]

That's weird.

Is this on AC or battery power?

Did you doublecheck app specific Vsync settings in NVIDIA Control Panel?

[goji]

No, this is not Vsync.. Otherwise i wouldn't go past 60FPS, and that happens (looking at the sky/ground for example). Once again, in the same situation with discrete graphics mode, i'd get +180FPS..!

[jcvjcvjcvjcv]

nVidia has had this for ages, it caps the framerate to the refreshrate for energy saving.

It's a no-cost gain anyway. I wouldn't worry about it.

If you want to play it to the max, buy a 22" CRT for like $10 and play at 1024x768 @ 170 Hz