Hi
Does any (or all) of the Nvidia's 7 series (video) cards are better than Nvidia's 6 series cards? or some 6 series cards are better?
Thanks

Check out Tom's Hardware's Graphics Card Hierarchy Charts. These typically appear at the end of their "best graphics cards for the money" articles and give an indication of the general level of comparative performance of video cards going back about as far as there is to go.

Thanks a lot. Good link

From memory.

I recall that 7500 series chips have problems with linux.

Some Considerations and the Spirit of the Chase

A difficulty with reviews of graphics cards operating under Windows is that the review is of the the effect of a Windows driver implementing the circuit on the card and the chip on that circuit, without considering such thing as cooling, noise, overclocking, etc., built by a firm that knows all the data, but won't tell. The card may have aspects of a "black box" when it's considered for linux.

When I bought a new card recently, I tried to eliminate, starting with price and availability in my market, and that nvidias proprietary linux driver covered the chip(no purist I), then naturally googled for the chip, and make and model, and linux and my favorite distro, looking for problems and complaints.

Using an avoidance strategy, I also thought of what was too much or too special for my use, and for keeping a balance with the rest of my components, particularly the screen.

Sorry if this isn't of any practical use. They wanted to sell me so many, each better of course, and these criteria were useful to sift them. Good Luck

According to my opinion it is not the first number that matters, but the second. In Nvidia names the first number is the series, and the second is the chip. So 6600 is series 6 with chipset 600. Also the last two letters of the name are important. LE means Light Edition, which is awful!
So 7200LE is series 7 with chipset 200 and Light Edition
and 6600GT is series 6 with chipset 600 and GT means "very much better than any LE". It is obvious that 6600GT is better than 7200LE.
Another important factor is timings. Eg my 6600GT has 450MHz main clock and 500MHz memory clock. So if I want a better card I'll search for higher clocks (and not just higher memory).
As far as linux compatibility I use the Nvidia binary driver from Nvidia site and works very well.
I hope I helped.

Thanks for your detailed help, its first time that I came to know about the meaning of LE and GT, so GT is more important and LE but there are other versions like GTX (or maybe some other), Can you explain them also?
Thanks

From a little search I figured out that GT is better than GS and GTS/GTX are better than GT. Also Ultra litteraly means Ultra ;-)
If possible check the clock / memory timings. This is the most important factor.
eg I would look for a card with at least 600MHz core clock and at least 1000MHz memory clock.

Are ATI cards cheaper than NVIDIA's?

I would not get an ATI card even if you find it cheaper, the Linux ATI drivers are rather crappy.

As for an nvidia card, if you want to play new games get an 8000 series, if not then any lower one will do.