Hi, I have an Nvidia Geforce 8400 GS installed on my computer. A couple of days ago, I started to check the temperature of the card and it was constantly up at around 250 Degress F. And at that same time, a simple game I play all the time started to lag out of no where. The game has never done that before. I did a virus scan with my NOD32 Anti-Virus software, and updated the video card driver. The heat still didn't go down and the lag didn't stop either. So, I'm thinking that the heat of the video card dramatically effects the computers speed. Any thoughts?