you know instead of a cpu heat/fan and a fan for your PSU you can get just heatsinks now for both i was wondering what if it was a really hot day could the heatsinks cope with the extreme condition
i'd still get a steady flow with a nice set of fans, and watercooling if you can afford it. My Xbox (a Celeron computer) is on a heatsink system and tends to overheat.
Without a fan your CPU life will decrease or even be destroy. Every PSU is made with atleast 2 fan buildin and I don't think it's a good idea to just use a heatsink without the fan.