Hi. I planned to build a general use PC just to watch maybe movie connecting from PC to TV, download, or maybe a little bit of League of Legend or Minecraft game. I don't want to waste my money on a big GPU, so here is my question.
Agree, the 3570K is total overkill. You likely can easily get by with a 3220. I would say 3225, but I don't think Intel's HD4000 are up to LoL. A cheap 7750 or 640 might be a little overkill, but it will guarantee buttery smooth graphics rather than "just good enough."
And with that in mind, you don't need a beefy PSU. A good 430W will be very sufficient.
This might be a little overkill for your use, but this would be a VERY nice office / general use computer.
440 is even better. It won't max LoL but it will play it smooth for about 60 bux. Will not require a beefy PSU either. Low profile card and quiet.
But as you said, low profile. So why not save some money and live better?