So I want to build a very small computer using a thin box to install under my TV to steam movies. I must work with a 300watt supply, so I need low power consuming components that also do not build up much heat.
I'm considering a Sempron or Celeron processor, but I wanted to know everyone's thoughts or experience with these smaller cpus. Thanks.
Which is why I recommend an athlon IIx2 with a motherboard that has integrate radeon 4200 graphics. Should be able to handle everything you throw at it. Since you don't need a dedicated graphics card, pretty much anything you decide on should fit into an under 300W power supply.
Heat should not be an issue with that setup. A sempron would also work fine (the 140).