budget and intergrated performance

[rossiboy001]

Hi my question is a little tongue In cheek compared to issues on xfire and sli, but something which came to mind.
My daughters PC started as a basic setup. its a 775 socket motherboard from foxconn with intergrated graphics.
After an upgrade on our other pc , I have added a GT220 nvidia card to it.
This has enabled her to play games which overwise would not run.
My question is on motherboards with intergrated graphics, When adding a card. Does the card completely take over ? and part of the motherboard become redundant.
Can you utilize the motherboard on board graphics with the card added ?
I suppose what im asking is can they be used in a poor mans version of a virtual duel card set up, just to boost that graphics performance a little within its boundaries.
Many thanks

 

[Surveyor]

On most motherboards the integrated graphics are disabled when using a separate graphics card.

Even if the integrated graphics still work they can't be used to "boost" your separate graphics card.

 

[rossiboy001]

Thanks worth a thought though lol.
Just came to mind because im sure last time I bothered wandering around the likes of comet and currys, that some pc"s were advertised as "Dedicated" and "Intergrated" on the same spec card. Leading me to think that this was the case
Thanks for clearing that up.

 

[Monkeynut]

Only on specific chipsets and graphics cards was this possible. On a motherboard with an Nvidia Geforce 8100 for example, it was possible to put an 8400GS in and have the 8100 give a bit of a boost to the performance via SLI. (largely because the 8100 was just a crippled 8400 so they were pretty similar) An AMD 780G chipset with Radeon 3200 graphics could do Hybrid Crossfire with a Radeon 3450 as again they were pretty much the same graphics card apart from minor feature differences.

Intel graphics chips do not support this and it would provide very little boost if any if it were possible anyway.