The Asus Extreme N7800GT that NGOHQ reviews may not be the fastest card based on NVidia chips, but it is certainly powerful, and signifiantly cheaper than the GTX, and it can still be setup in SLI.

"This card overclocked better than I expected, I was able to reach the core speed of 485 MHz and 1200 MHz on the memory. The card was 100% stable at that speed and no artifacts occurred. In reality and according to Riva tuner the card runs at 526 MHz core and 1200 MHz for the memory, very impressive indeed. Now you are probably curious to see if the Asus Extreme N7800GT is as fast as or faster than the 7800GTX."

Here are some more Graphics Card articles from around the web:

   Graphics Cards

• ATI's Technical PR Interview on CDRinfo.com
  
• AOpen Aeolus 7800GTX-DVD256 @ Overclockers Online
  
• Modded ATI Catalyst 5.9 with CCC @ NGOHQ
  
• NVIDIA 1.0-8XXX Series Preview @ Phoronix