Should I get integrated graphics if I already have a dedicated GPU?

I want to upgrade my computer to the new Sandy Bridge CPU's, which features integrated graphics.

However, you have to choose between two types of chipsets: H67 or P67.

Now since I already own a GTX 460, so is there any added value to using the integrated graphics? Or are there any other good reasons for picking one model over the other?

Would it perhaps let me disable my GPU when I don't need it's additional power (like in notebooks) or would the integrated graphics simply allow me to add another screen?

Note: this will be for a desktop.

Solution 1:

No, just disable it. Integrated graphics will not compare to the external GPU you have, and it won't save power or allow you to add an extra screen. It's one or the other, not both at the same time.

Integrated graphics will be choppy and slow. Essentially a downgrade.

Solution 2:

The integrated graphics will have its own connector, so if you wanted to save power by powering down the GPU (somehow?) you'd need to physically change the connectors. A KVM switch would also do the job.

The extra connector could be used to run another screen, but your GTX 460 can already power two. It can however be useful for diagnosing problems with your graphics card.

You should make the choice between the chipsets on another factor.