Why is "Color Quality"only upto 32 bit in x64 XP?

Thanks, I had given up hope for this thread.

Q1.
But can you tell, what does my card mean by supporting 64x systems, only that it can be installed in such an environment? And not that it can produce 64bit colors in that environment?
It supports 64 bit operating systems, not 64 bit colors. Basically it's for a compatability report.

Q2.
Secondly, I can also not make out from the AMD site, what kind of a card is this FireGL (or even the Quadro by Nvidia). I don't happen to understand the difference. If a GT285 or an HD 4870 is enough for games, then what do these lines of product represent? May be THIS is the only difference between both types of cards, that the one I have, and the GT series, are 32 bit, whereas this series we have here, is 64bit.
FireGL/Quadros are known for graphic design. Those suckers CAN put out 64 bit color, not to mention put out insane amounts of graphic processing powers (NOT DESIGNED FOR GAMES). Most if not all gaming cards DO NOT output 64 bit color, they are gaming cards.

Q3.
Can these type of cards be used for conventional gaming? Which would mean that they are going to give TWICE as much quality in visual effects as the 32 bit cards. Or, they are just special cards for special purposes, which are going to be inefficient for conventional gaming. May be they are just for development of the games and some other uses, just like you have very powerful server processors, but like everybody says, none can be used for gaming they are so inefficient in graphics. In other words is it feasible for someone to buy such a card and install in their system for just playing the games, and get twice the quality of 32bit cards?
Quadros/FireGL cards cannot be used for gaming very efficiently... actually probably not at all. They are indeed special cards for special purposes... intensive graphic outputs, sometimes used for 3d modeling, architecture (not building buildings)... etc


Thanks