W510 how to switch GPU, 3D mark problem

[zsolpyW]

I recently bought a razor W510

Intel Core i7-620M (2.66 GHz)
8 GB DDR 3 RAM
15.6 Full HD 1920 x 1080
NVIDIA Quadro FX 880M - 1 GB

Probably there are two graphic cards: integrated Intel and a dedicated Nvidia. I don't known how to switching these cards?
In device manager is only Nvidia visible.

It should be here: bios -> config -> display. But there are only display options, nothing about GPU.

The second thing, I tested the 3D Mark 2005. I do not know why sometimes the test goes at speeds of 5-8 fps regardless of the resolution, and sometimes 20-30 fps in the native.
Why is it that ?

Result 3D mark 2005 is 3500pkt. What about the result ?

thx

[Tasurinchi]

I was of the opinion that W510 do not have switchable graphics (mine doesn't)

[600X]

Indeed, the W510 does not have switchable graphics, unlike the W500 before it and its successor the W520.

[makaveli559m]

I don't get how the non work station ones had the first version of Optimus :O I was amazed about that.

[thinkaholic]

So there is an integrated Intel graphics processor in my W510 (4319-2PU) with an I7 Q720 as well as the discrete Invidia GPU, but no way to switch between them?

[bit_twiddler]

There is no integrated graphics on the W510 quad-core CPUs because there
wasn't enough room left on the chip for Intel to do that.

[hhhd1]

only dual core processors have built in integrated GPU, quad cores do not have iGPU,

that is why w510 doesn't have switchable graphics, while t510/t410 should have it.

This is only true for 1st gen of core i series.

[thinkaholic]

Thanks...I was kinda misled by this:

https://support.lenovo.com/us/en/documents/migr-76476

Greg