The Xigmatek Prime SD1484 H.D.T. CPU Cooler
The Prime uses an aluminum base to surround the four 8mm heat pipes with the tops of it cut to accept the mounting hardware. From there the pipes take two different bends as they arrive at the forty-six fin stack that gets pressed over these pipes. At the top the tips of the pipes are exposed and surround an "X" logo in the middle.
The fins are supported with the sections of raised aluminum that surround the heat pipes. The side is left open and allows air to escape. At the bottom, you can see the outer two pipes make the tight bends and move to the inside of the fins, where the middle two bend outward and are positioned nearest the edge of the cooler.
Here is where Xigmatek put in some hard labour. Looking at the top fin you can see what appears to be a knife-like edging, and essentially it is, but with a 0.3mm thickness, where the rest of the fins is 0.5mm thick. They also added a pattern of full sized fins mixed with sets of five fins that are cut away to enhance airflow. I have seen cavitations in many forms before, but I don't recall edges like this ever!
The top of the base has four tabs on the top and the cut-away on the sides to support the "cross-bar" in the mounting system. The top tabs keep the wide bar centred, while tabs in the bar will grab the cut-away edges to center the cooler on the CPU.
As you can see, the aluminum of the base plate separates the 8mm pipes and once the pipes and base are combined, both surfaces are milled at the same time. The surface across the pipes is level, but there are gaps that may "absorb" the thermal paste depending on your application method. I advise a line of interface material down each pipe for the best results.
The 140mm included fan is very reminiscent of the NZXT Havik fans, but these have not only wavy blades, but an attractive double stripe of chrome on the leading edges, and the blades are black along with the frame. The included fan is connected to a 4-pin PWM connector for powering it.
The second fan they have sent me for testing has the same model number on the fan, so we have to assume the specifications are the same, but this fan uses a 3-pin connection for power. On top of that, PWM is now out the door, as there isn't an adapter and I have to now use two separate headers to make the fans function.
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