As much as I want a 4850, I'm concerned about the heat issues and noise levels. 80C at idle seems a bit too hot, and setting the fan speed higher would make even more noise. I'd rather not have the sound of a hoover constantly running for the next year. I'm probably exaggerating things greatly, but I've never owned any graphics card even remotely high-end. I had a TNT2, and then six years later I bought a 7600GS, so I've never had to deal too much with any issues related to higher end components.