Could someone explain what exactly it is? I have a GTX 280 and a HD 4890 side-by-side and doing some comparisons, but it isn't exactly limited to GT200 and RV770/RV790. I believe I had a similar experience with a 8800 GT and a HD 3850 as well.
Basically, what happens is that NVDIA's cards take a much huge hit once AA is applied. And it just doesn't feel as smooth as ATI cards at the same AA. I am using a 30" monitor so probably frame buffer is a factor, but I am comparing cards with the same amount of VRAM. And GT200 has superior specs to RV790 in just about every aspect (at least on paper).
So I decided to find out what is going on, and I did find something while running 3DMark06.
This isn't an apple-to-apple test. 280 is paired with an E8400 @3.6GHz and 4890 with a X2 4050e @3.0GHz (waiting for a PII). But I figured it wouldn't matter much at 2560x1600/8AA/16AF.
The detailed feature tests show 4890 is better at simple vertex shader and Perlin Noise. So it got me curious what Perlin Noise is.. and if it has anything to do with AA?
Any help is appreciated.
Basically, what happens is that NVDIA's cards take a much huge hit once AA is applied. And it just doesn't feel as smooth as ATI cards at the same AA. I am using a 30" monitor so probably frame buffer is a factor, but I am comparing cards with the same amount of VRAM. And GT200 has superior specs to RV790 in just about every aspect (at least on paper).
So I decided to find out what is going on, and I did find something while running 3DMark06.
This isn't an apple-to-apple test. 280 is paired with an E8400 @3.6GHz and 4890 with a X2 4050e @3.0GHz (waiting for a PII). But I figured it wouldn't matter much at 2560x1600/8AA/16AF.
The detailed feature tests show 4890 is better at simple vertex shader and Perlin Noise. So it got me curious what Perlin Noise is.. and if it has anything to do with AA?
Any help is appreciated.