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.
If you need further help to find the right VGA cable, ! VGA (Video Graphics Array) is the minimum standard resolution for PCs today, and is supported by all IBM-compatible computers. Maximum resolution varies between 16 colors (640 x 480) up to 256 colors (320 x 200).