Dual SLI or more expensive single card?

ceg267

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Oct 2, 2009
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Very basic question here, I'm sure it's been asked and answered before, but I can't find the answer.

I'm not building a system myself, but I am configuring one through a mainstream company. When considering upgrade options, what is better:

Nvidia GeForce GTS 240 Dual OR

GeForce GTX 285?

The latter is more expensive. Is there any reason to get the single?
 
I havent heard of a 240, do you mean 250?

In any case, you would need twin 260s to beat a 285, twin 250s or 240s are not as fast. Also the use more power and generate more heat than a single card.

*edit I looked up the 240, its a low powered 250 not available for retail sale.