GeF 7800GT and is dual worth it?

[Caintommy]

I'm buying a new system now and I'm looking at the graphics card.
I want to build a good gaming system with the best performance for the best money. Priceworthy.

I hear the GeForce 7800GT 256Mb, PCI-Express (with arctic cooling fan) is a good buy and good performance.
True?

Also if I want to upgrade my system in a year or two I can add another identical graphics card which sounds interesting but I don't know anything about dual graphics cards.
How good is the performance increase with two cards?
Is it all moot and I should just buy a new single graphics card in two years instead?

Thanks for any replies

 

[Heyyou27]

Get the 7900GT; they're 300$ and faster.

 

[PX7800GT]

Yeah , Yeah , Yeah ... Forget About 7800 GT , Go For 7900GT ( Same Price , More Performance ... )

 

[Caintommy]

How's it possible they're basically the same price but 7900 is better?

What's the catch? 8O

 

[sackynut]

they are newer, in production now, discontinuing the 7800.

 

[Caintommy]

they are newer, in production now, discontinuing the 7800.

I see, thanks.

And what about dual cards?

Also if I want to upgrade my system in a year or two I can add another identical graphics card which sounds interesting but I don't know anything about dual graphics cards.
How good is the performance increase with two cards?
Is it all moot and I should just buy a new single graphics card in two years instead?