These are the only multithread games out that i could find , I knew there was onle a few .
Quake 4 (and Quake 3)
Call Of Duty 2 ( i think this was a patch )
The Elder Scrolls 4: Oblivion
The biggest target audience for duel core processors has been gamers, but you will in real trems hardly see much performance advantage over single core processors . Its all marketing hype
Games simply don’t need duel core and can gain just marginal performance out of them. The chip companies are hailing duel core to be the natural evolution of chip design. And they have to, they want to sell these things, and they sure aren't gonna say multi core, it's a little bit better, sometimes .
As the public, we just have to try and stay educated about whats going on, and look past all the marketing speak .
The point is many games with high level graphics, particular complex shader-heavy effects, don't need more CPU processing power, they need more GPU processing power. It's the GPU which handles the rendering tasks, and unless these could somehow be transferred to the CPU (which they can't really as games are not designed for this, and neither are CPUs), then the gains may well be marginal.
I guess im saying get a good Graphics card over a duel core cpu