Antialiasing image quality - GPUs side by side
Here's a look at the Radeon HD 2900 XT's edge AA image quality. These images come from Half-Life 2, and they're blown up to 4X their normal size so you can see the pixel colors along the three angled edges shown prominently in this example.

Antialiasing quality
Radeon X1950 XTX
CrossFire		GeForce 8800 GTXRadeon HD 2900 XTRadeon HD 2900 XT
Narrow tent filter		Radeon HD 2900 XT
Wide tent filter
No AA

  

2X

  
4X

 
6X  6X CFAA6X CFAA

  

SuperAA 8X8X CSAA  8X CFAA

  

SuperAA 10X8xQ8X  

  
Super AA 12X  12X CFAA 

  

 
Super AA 14X16X CSAA  16X CFAA

  

 16xQSuperAA 16X  
 

  

CFAA's tent filters look reasonably good in these classic edge cases, as do AMD's 8X multisampled and SuperAA 16X modes. I think our example from Oblivion on the previous page does a better job of showcasing the tent filters' strengths, though.