In my experience, AMD reference cards are usually over-designed and highly tunable, whether you want to tune for speed or efficiency. They might screw up a cooler every now and again, but reference cards get aftermarket coolers made for them. The Tahiti reference board is a good example.

It's pretty much the only true torch drive — one with both high thrust-to-weight AND high specific impulse — feasible at our current technology level. Who needs a launch window when you have enough Δv to kick in the door and enough thrust to circularize from a hyperbolic flyby? Just... the exhaust is all kinds of awful, so forget about using it in atmosphere, and even in space there might be some traffic control issues.