Quote:
Originally Posted by He111
yeh, ok -D and -I are red-herrings, the only thing you need to know is - Dual-Link .. and it works perfectly!
CLOD @ 2560 x 1440 on a 27" looks VERY impressive! 
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Correct
The difference between the two is DVI-I incorporates DVI-D plus also an additional separate analog signal to make the connector backwards compatible with older standards like VGA. Note how the four analog connectors on the LHS of the DVI-I diagrams above are missing on the DVI-D diagrams.
Basically, unless you are using an old analog screen or similar analog device (and hence will need DVI-I plus a special analog dongle) there is no difference as the digital pin-outs are identical on both standards.