hmmmm,
(please forgive my technical innacuracies, but this explanation seemed to match what I was experiencing.)
the way it was explained to me was this:
The computer is making information for the game based on inputs from you and the game software. This information has to be made into pictures for the screen. As the computer works, it sends information to the video card for display. and then goes back to work for the next picture. but it can only send information to the video card once the card has displayed the last information it got and has room for more. The rest of the time the computer either waits or just erases information from the last pass if the video card wasn't ready to receive it when it completed that step.
better video cards do two things. their memory is larger and they can hold more information from the computer. Also with more powerful Graphic processing units they can do some of the computations required to turn raw information into a display for the computer.
basically you have TWO computers working together to make the final result. The ultimate flow of information to the screen is only as fast as the slower of the two computers.
while only 30 fps or so is required for the eye to think it has all the information it needs, there is in actuality information being lost in between frames. More frames per second => less information lost.
there is A LOT going on in our minds to control our reactions, access choices, etc. that is MUCH faster than our eyes abilities to detect frames. Don't forget much of the human effort is from the cerebrial cortex (muscle memory) and that is one fast processor! Further, don't forget we have internet latencies that are additive with any processing time our machines use. It all adds up. anything that can shorten the processing time helps.
how many fps are needed are not only a function of the eye, but of the game, your system, and the medium that connects players together (whether it is external (internet) or internal (Motherboard))
PS: Yes, I really do turn better laps since upgrading my video. My son said he is experiencing the same thing. This upgrade I mention was from a GeForce2 GTS which was no slouch. (I am on a GF3 now) As another point, I really see no appreciable difference in Half-life (mods) which was already at the games' cap of 100fps before the upgrade. Unreal Tournament.... it's hard to say because I really suck at it!
<P ID="edit"><FONT SIZE=-1><EM>Edited by Insidious on 10/19/01 05:00 PM.</EM></FONT></P>