It looks like you're new here. If you want to get involved, click one of these buttons!
Taken from my personal blog:
With my old XFX video-card dead, and the new ASUS damaged on the DX10 part, I decided to look at the differences between DX9 and DX10, and what better game is there to do that than with Lord of the Rings online?
I started to wonder about the difference between DX9 and DX10 when I played Oblivion and found a very good looking smoke plume, one that was as good as a plume I found in Lord of the Rings online a while back when I played it under DX10. Since Oblivion is a DX9-only game, I thought to investigate the difference a bit. Below is the screenshot of the smoke plume in Oblivion.
Nice looking plume there, huh? I thought the one I saw in Lord of the Rings online was done with DX10, but I guess I was wrong.
So I started Lord of the Rings online in DX9, made a screenshot. Next I changed the configuration to DX10 and took a screenshot on the same spot. I intentionally showed the FPS rate on both of them.
Lots of people think that Lord of the Rings online uses DX10 to make the water reflection look better. Well, I could be wrong, but the water reflection on both screenshots is of the same quality. So I looked further, and all I could see was a difference in the shadow. Where the DX9 screenshot shows hard black shadows, the DX10 screenshot shows more realistic shadows. This could be the only difference between DX9 and DX10. But looking at the distance, I personally thing the trees look better on the DX9 screenshot...
Well, the only difference..? There is a huge performance difference there as well. The DX9 screenshot shows a FPS of 54,7, while the DX10 screenshot shows a FPS of 40,1. That's an impressive 27% drop in FPS!!! And that with me being the only person there. Imagine what would happen is I was on onw of the most crowded spots in Lord of the Rings online: 21th Hall. I fear the drop would be even worse there...
Now I wonder if having a bit more realistic shadows in your game is worth a massive drop in FPS like that. Personally I'd say no, but there are a lot of hardcore gamers out there who'd disagree with me. For now, I'll stick with DX9. A lot of games I play don't support DX10 yet, and those all look good: Oblivion, Dragon Age: Origins and Mass Effect 2. Even Lord of the Rings online looks still stunning in DX9! Perhaps if my cards are replaced (I hope the warranty allows them to be replaced) I might rethink DX10 in SLI again, but I'm still not too sure..