I was having various issues with my Gigabyte GA-E7AUM-DS2H (GeForce 9400, Celeron 440 Conroe L) system when it came to de-interlacing 1080i content. In Windows, I either got occasional stuttering combined with frames that were not de-interlaced at all. With later Nvidia drivers, no more stuttering, but the frames were only partially de-interlaced. Both problems seemed to point to a lack of processing power, and I know I was able to repeat at least the first problem on another system using the same motherboard and a more powerful dual core CPU. In Linux with MythTV, I was experiencing a slight video lag when using the Temporal 2x de-interlacer with 1080i content. Again, that to me suggests lack of processing power. I then put together an Ion system using the ZOTAC IONITX-A-U motherboard (dual core atom with power supply). To my surprise, this system seems to be handling 1080i content perfectly! I checked the Nvidia X Server configuration on the Ion and noticed that it had several different performance levels ranging from 200 MHz to 450 MHz (I think those were the numbers). I thought that maybe since the Gigabyte motherboard didn't have a fan on the graphics chip that it was getting too hot and staying at a slower speed. I looked at the Nvidia X Server configuration on that system, and there was only one performance level, but it was 580 MHz! So it would seem that the Gigabyte should be outperforming the Ion, yet it is the other way around. Does this sound right? Is the Gigabyte system faster than it should be? I did not intentionally overclock it myself if it is.