Not everyone wants to spend a small fortune buying the fastest processor sold, simply for the promise of factory-made speed. Overclockers are quite the opposite; they're known for taking a more affordable model and making make it into a CPU comparable to the top products. Overclocking can mean exerting additional performance from computer hardware, or it can be a hobby for anyone who likes to tweak settings the same way that some people wrench on cars. But like any race car, the high-performance computer requires the right components to keep it operating at peak condition. Heat is the problem, and overclocked processors generate plenty of it. CPU cooler heatsinks are the answer, and the Xigmatek Aegir SD128264 is the latest product to promise outstanding thermal efficiency and ease of installation. Benchmark Reviews tests the double-layer HDT design of the Xigmatek Aegir SD128264 against the best heatsinks in the industry, using both silent and high-output fan combinations.