Since Windows Vista launched earlier this year, there has been little reason to make the move. Personally, I’ve run into so many problems with the new OS, that I’ve made it a goal to stay away from it as much as possible. However, I do admit that some new DX10-capable games are doing a good job of at least making me want to install it.
HardOCP explores a new game to actually handle DX10 well, online RPG Hellgate: London. Although a few bugs are evident and performance is hit hard, the DX10-rendered game looks far better. Shadows are more refined, motion blur is fantastic, weather looks better and there is no comparison with the smoke. For an MMO game that you are likely to play all the time, DX10 looks to be worth the time (if you already have Vista of course).
The above screenshot comparison shows an area in the Lower Thames region. It shows the same effect as the previous screenshot. On the left, there are ashes blowing around in the air, and on the right, the air is clear. The blowing ash adds tremendous atmosphere and helps you believe that London is actually burning.
Source: Hard|OCP