Maybe you are right I dont have actual figures
However for casual gamers I mean someone playing games from time to time
It is not just a matter of price
If you you use a computer just as a word processors on regular basis than even outdated computers are ok
This kind of audience does not change a graphic card so often, regardless of the price, simply because they are not interested

That should probably read the majority of hardcore gamers. I can't believe the majority of all gamers (minus casual) regularly update their 3D cards.

why not? up to date cards are very cheap nowadays

yes so can I ask someone which graphics card is better ? I just brun my computer so I need a cheap one before I can buy a real one and I don't know where I Can ask !

its interesting we just had this discussion on the blender forums, heres what was wrote, most of the advice in it is the basic info you'll need when getting a budget card:

http://blenderartists.org/forum/showthread.php?t=124990

Most pc owners will not install upgrades themselves. If a shop is asked to upgrade then not only does it cost more money but the owners of the pc have the hassle of having to disconnect the pc and take it to the shop for the upgrade (and sometimes having to collect 24 hours later).

If you are a gamer then you are generally clued up about doing upgrades yourself but if you are a the type of person who plays the odd game and uses a pc for office work then just because a graphic card is cheap doesn't mean you are immediately going to install one as soon as a game runs badly. You are more likely to return the game.

"I can't believe the majority of all gamers"
we were discussing gamers and how up to date their cards were.

But you will not make a game for this type of audience with Leadwerks2, UE3 or C4 engine. You will better use Torque Game Builder (the 2d engine of Torque) to make a fast running and good looking 2d casual game then.

I will never see a 3d shooter at the machines of my parents. They simply dont care and dont need latest hardware for that. But they also buy new complete pc hardware from time to time. So it happens that you see much computers capable to play 3d shader games even though they never will do it.

I completely aggree with machinery frank

I dont understand why nobody understands, that a gamer is going to have a gamer pc, but the office is going to have an office pc, and going to play bejeweled, and solitaire.... why do you need a great videocard with those?

I have some friends who have a computer and play games from time to time but they dont even know what a graphic card is

However I wonder whether Leadweerks, C4 etc , in general these advanced engines are really suitable for an AAA game
I asked this question, some time ago, on GameDev.net

" Why should a commercial sofware house pay hundred thousand dollars for a game engine while they could purchase a good one for a hundred dollars ?"

I was reply by a guy who claimed to work for a well known software house

He said that someone in the team had the same idea and they decided to give it a try
At the beginning everything was working well but in the medium run they had to quit and pay the royalties of the expensive engine because of instabilities and poor performances which were not evident in the preliminary bench test

I dont know whether this story is true, I have no reason to doubt it
In any case it made sense to me