Compare DVI Single Link vs Dual Link Video Cables
Note the picture to the left
of the dual link and single link DVI cables. The DUAL link
connection has a solid block of pins and the single link has a space in the
center. The technical difference is as follows.
These DVI cables send information using a
digital information format called TMDS (transition minimized differential
signaling). Single link cables use one TMDS 165Mhz transmitter,
while DVI dual links use two at 330Mhz. The dual link DVI pins effectively
double the power of transmission and provide an increase of speed and signal
quality. A DVI single link cable using a 60-Hz LCD can display a resolution of
1920 x 1200,
while a DVI dual link can display a resolution of 2560 x 1600 if
the video card and the monitor must support it.
Should I use a DVI Dual Link or Single Link Cable?
For Dual link to be utilized, the video card, the
cables and the monitors must all 3 support DVI Dual Link throughput.
As of 2012 most monitors have standardized on
1920x1080 HD so the benefit of using a dual link DVI cable from the standpoint
of increased resolution, is a mute point. However, since Dual link is
backwards compatible with single link, it cannot hurt to use a DVI-D
Dual link cable when possible.
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