What are the requirements for a HD Monitor?
I have been looking at monitors lately and notice that some are listed as High Definition monitors, such as many monitor from Gateway. When comparing the HD monitors to monitors not listed as HD I notice the majority of the specs are the same. Note that the models I have been comparing all have 1680 x 1050 resolution (native), I believe the minimum specs for HD resolution are 1280 x 720. The monitors I have compared all have DVI connection, not sure if that is a necessary for high def.
1) Is there really a difference between these models listed as high-def or is this more of a marketing gimmick? What is the difference?
2) If there is a difference, how big is the difference between watching HD on your PC with a HD monitor and a non HD monitor?