I just upgraded my PC over the weekend and among the upgrades was a new motherboard. The new motherboard has all the bells and whistles one could ask for including support for 4x AGP (Advanced Graphics Port) video.
I seem to recall however that 4x AGP was always kind of a joke and never amounted to much in practice. In fact, if memory serves, enabling 4x AGP actually slowed your graphics processing down. 4x AGP allows the video card to use system RAM to store data in. Unfortunately todays video cards are running at such a high speed that the time to cross the system bus and back seriously degrades performance. 2x AGP forces the card to use only its onboard RAM (which is not only phisically closer but generally tends to be faster than most system RAM specifications…in my case 32MB of DDR RAM on a GeForce video card).
So, is 4x AGP really not worth enabling? I can’t find the articles I once read that discussed this issue. My brain keeps saying, “4x HAS to be better than 2x doesn’t it?” I know that this necessarily isn’t true but confirmation on my vague recollections would be nice.