There was a time I used to assemble my own PC and spend hours tweaking it and customizing it and worry about the Arctic silver paste I applied to the CPU heat sink and check and measure temps etc.
Now, with 2 kids, I don't have the time nor as much interest in doing that. Maybe I will assemble my pc but I'd rather just buy a gaming laptop which works really well (I have Asus ROG 17" 3D gaming laptop) and play in 3D or regular in bed with an Xbox 360 controller.
I get most games in 1080p at nearing 60fps and tbh I am more than happy with even 30fps because it is very difficult to tell the diff between 30fps and 60fps - several people I did blind test on picked 30fps as better than 60fps - from young nephews to older people - proving to me that if you get consistent 30fps you're good. A good contemporary gaming laptop easily exceeds that normally for 95% of games at high resolutions.
Also found that most people couldn't tell the diff between 720p and 1080p which was also surprising but maybe expected.
Anyways, I've digressed a lot. There's good reason to game on a gaming laptop in bed rather than a beefy desktop for an extra 5fps