Re: Should I buy a new CPU Case or new fans (CPU Fan & Case Fans)
Another thing to consider with a hot-running PC is the cable-routing, that can disrupt the air-flow and cause 'hot-spots' too. If possible, routing the wires along the sides of the case and underneath the mobo can seriously reduce the temperatures :wink:
As for side-fans, they can either help or hinder the cooling, depending on the individual PC's internal layout. My PC has an 80mm out-take fan which drops the overall temps by about 5C, flipping it around to an intake raises the temps by about 5C, other PC's run cooler without a side-fan at all - It's a matter of trial and error.
Seeing as you'd have to chop a hole in the window for a fan to be fitted, I'd leave it as a last-resort if all else failed, it would be shame to cut a hole out, only to find the PC is cooler without the fan.