I have a Dell XPS 710 with dual graphics card capability. Currently there is one Nvidia GS 790 card installed. I would like to upgrade, but don't know which card would be right. My system specs: Core 2 duo 2.67 processor, 4 mb Ram, 750 watt power supply.
I appreciate any help, since I have no clue.

Maybe you mean Nvidia 7900 GS?
It's a pretty good card for a desktop and shouldn't be having any problems with adventure games unless they're driver-related.

Do you play Action and RPG games or only Adventure games?

With a 750 Watt power supply, your computer should be able to support nearly any video card. But if all you play is adventure games you don't need an $800 video card that plays the latest FPS at 1920x1200 resolution.

I don't know if this is the right place to post these 2 links and if a Moderator wishes to move it or delete it, it is Ok with me, the 2 sites test to see if your computer is up to snuff to play games.
Keep in mind 2 things:
1)They do have all the games up to date, especially adv. games and
2)It is not 100% accurate, but still a good starting point:


http://www.game-debate.com/games/

http://www.systemrequirementslab.com/cyri/

Ray

Do you have a specific reason for upgrading your video card; adding another card?

If it helps, an NVIDIA GeForce 7950 GX2 is what is listed with this computer.

Thanks all for your advice. Lately I've been playing a lot of RPG games, all the latest releases.(I'm hooked). So far I've had no problems. I was looking at the Witcher 2 specs. and of course would like to play it.
I'm not sure this video card can handle it.

You shouldn't have any issues with that card at all.

That second link that Starcom provided is a great one that I've used before. Check out what it says about The Witcher 2 and your computer.