DVI-D SingleLink / DVI-D DualLink / Help Please Anyone?

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http://superuser.com – I have a 2x 21in. dell 2005 FPW with a Single Link DVI-D. I have a EVGA GTX 760 SC with Dual Dual Link DVI-D / DVI-I. Can I use A Dual Link DVI-D cable on both. So in the future i dont have to buy the Dual link after buying a single link. Thanks For any help in advanced. CHEMLIGHT (HowTos)