At the price some people paid ($400), they can afford to buy another one, after it's gone up in smoke.

I'm just kidding; in case someone take me seriously.
^ Here's a smart answer.

I totally agree with that.
* By the way, I got about 6" of space on top of my 805, without an additional fan; and it's running just great. A bit hot, but just the way I like it.
If I would have only a few inches of space, I will add a small 4" external fan on the top right rear corner (viewed from the front).
I love my 805, keeps me warm and all cozy. Wife loves it too.