2 GTs or 1 GTX ???

[Captain828]

Just wondering: What's better? one 7900GTX or 2 7900GTs?

I'm asking this, because I was unable to find a test for this. I found one at Anandtech w/ the 7800s and the 2 GT won. But what about the 7900s?

Alright, let's be more fair and compare one 7900GTX 512 vs. 2 7800GTs (SLI). Place your bets!

 

[es84]

Two SLi GPU s on the system give great perfomrance , we have tested this, best experiience during gaming, the 2 cards share the load better ,

 

[Captain828]

I'm talking really explicit here, not general stuff: 2 7800GTs in SLi vs. 1 7900GTX (shall we say BFG or ASUS)
I'm thinking of getting a system based on this sort of GPU setup.
Plus I want to know what's more $$$ and Power efficient:
2 BFG 7800GTs -> 2x300=600$
1 BFG 7900GTX -> 550$

 

[DonNagual]

Two 7800GT cards will outperform a single 7900GTX in just about everyway.

There are the obvious drawbacks however, i.e., you need a more powerful PSU, you will have two GPUs making more heat in your system.

Here are some benchmarks for you:
http://www.anandtech.com/video/showdoc.aspx?i=2717&p=1