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Laptop SLI, what's the point?

AMDCam

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Hey guys, I've been seeing a lot of new top-of-the-line laptops with SLI in them nowadays. But I've also been noticing that most single card laptops will outperform them and use half the space. For instance, the XPS M1710 with a 7900GTX 512mb is about as powerful as the Alienware SLI 7800GS 256mb's. So what's the point of laptop SLI nowadays? I for one think mobile graphics cards need to improve a little more before SLI gets popular in laptops, because right now they're totally pointless. I don't see 1 advantage right now, unless they can make some SLI 7900GTX 512mb's, or any SLI with 512mb's on each card.
 
yes but the difference is a 7900gtx is more powerful than a set of gs`s but you got to consider the cpu and if the 6800`s are bottlenecked aswell as the 7900
 
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