Single link DVI is able to transfer 1920 x 1080 resolution vs dual link 2048 x 1536
If your equipment does not specifically state it is Dual link in its specifications, it almost certainly is not. A better quality cable is a better quality cable, and single and dual link has nothing to do with quality. On the other hand, if both devices being connected support Dual links, then a dual link cable is the proper cable for the application, and you will have the capability of much greater resolutions and refresh rates. A properly designed Dual link cable should have no negative effects when used with single link equipment.
Según parece, la mayor parte de los aparatos de hoy en día son Single Link, porque Dual Link no es necesario. Sin embargo, parece que efectivamente afecta a las resoluciones y las frecuencias de muestreo. Quizá tenga algo que ver con la interacción del upscaler con la salida digital