The Xigmatek Aegir SD 128264 features the latest in stacked Heatpipe Direct Touch design, taking layering and heatpipe mass to a new level in cooling. Breaking down the model number of the Xigmatek Aegir SD 128264, we know that it features a 120mm fan, 2 8mm pipes and 4 6mm pipes, which is quite an impressive array. With 2 8mm and 2 6mm pipes making direct contact with the CPU, the Aegir stacks two more 6mm pipes directly on top of the 8mm pipe for even more heat dissipation. The 120mm fan is PWM, with speeds variable from 1000-2200rpm and topping out at 89CFM of air movement. All of that air is pushed through the aluminum fins stacked on the 159mm tower, giving the Aegir a lot of mass for cooling potential.