GPU was the important part for me. The CPU should be fine since it won't be overclocked at all, but the GPU is something i'd like to keep an eye on when I overclock. Don't want to fry it at all. My previous laptop (Dell 9200) ran extremely cool, but the 8104 shoots out a whole lot of hot air from the vent on the left side!
In all honesty, I don't even have to overclock the X700 on the 8104 to play HL2 at the native 1680x1050 resolution. IMO it plays just fine. Then again, why did they put a 160MPH speedometer in my Eclipse if the average speed limit is 65MPH? :-)