patency (plural patencies). ( 1 medicine) The degree of openness of a tube, such as a blood vessel or catheter; the relative absence of blockage. ( 2 uncountable) Obviousness; clarity.
Maximum Length: 16' with a standard cable, Up to 50' with a high quality cable. VGA is an analog signal and so as distance increases the quality will decrease. A lot of factors can determine the maximum cable length, but for low resolutions (up to 800x600) you can reach 100 feet and beyond without too much trouble. For mid-range resolutions of 1280x1024/1024x768 you can typically reach somewhere between 50 to 100 feet.
The main difference between these two is that VGA is an analog standard while DVI is digital. DVI is next logical step for connecting your computer and monitor.Video signals are originally digital signals but are converted into analog before leaving the GPU of your computer through the VGA port.VGA was created because all of the monitors at that time are based on CRTs which were analog in nature.. DVI is digital while VGA is analog. 2. VGA is for CRT monitors while DVI is best for LCD monitors. 3. Using VGA for LCD monitors leads to multiple conversions that might slightly alter the final image. 4. DVI is newer and would soon make VGA obsolete.