what does sli do? the one for laptop video cards, like dual nvidia geforce gtx 260m sli enabled|||It runs multiple cards at the same time to make an image on the screen faster than one card could do alone. ATi does essentially the same thing with CrossfireX.
A poster below me mentioned multiple monitors. He's wrong, SLI and CrossfireX only run ONE monitor. If you run more than one monitor, the cards operate independently of each other, they don't link themselves, they automatically break the SLI/Crossfire connection.|||When multiple (Nvidia) cards are running in SLI, the cards are working together to render graphics much quicker and much more efficiently. This is good because each GPU has to do significantly less work meaning each GPU will be running a bit cooler. However, multiple cards will create a TON of heat, meaning you need one hell of a cooling system to keep things at a nice temp.
CrossFire X is the same thing, but it uses ATI cards instead.|||it ties the cards together so that they can link their video memory together and they can more easily run on a multiple monitor setup. (its also cool to just brag about having SLI)
this is how i think it works im most likely correct though.
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