Through the years, I have experimented with heatsinks, thermal tape, peltier devices and big fans to acheive the highest levels of performance my hardware can manage. The results of these tests pointed to a simple philosophy. Simple is better. The Product About as simple as it gets, I kick myself for not thinking of it first. The CardCooler has recently added the ball-bearing fan as an option.
Performance is approximately the same, but the ball-bearing fans add reliablity.
For four bucks more, I say get the ball-bearing model. Loosen a couple of nuts. Tighten a couple of nuts. Plug in the fans to available power leads. Close up your case and boot up.