Here's another skyscraper, yet it is unlike Thermalright's towering beast. Scythe's Ninja-CU is perhaps more aesthetically pleasing, with a clean, colorful design. Apparently, the version shown here is a limited edition, but the more recent Ninja 2 looks similar, sporting beefier features, but without the cool red fins. Boasting a pure copper base, six heat pipes extend up into the tower of fins. The 120 mm fan--running at speeds up to 800 RPM--is mounted on the side, blowing heat away from the tower. The device is also rather quiet, rated for a noise level of 20.50 dBA.
The actual heat sink weighs 1,015 g, while the added fan throws in another 115 g. The device's overall dimensions are 110 mm x 110 mm x 150 mm, and it is compatible with Intel LGA 775 and Socket 478, along with AMD Socket 939- and AM2-based motherboards. The newer Ninja 2 is slightly bigger, measuring 116 mm x 116 mm x 152 mm. It features a 120 mm fan running at 1,000 RPM. The newer model is also compatible with a larger range of processor interfaces, including Intel LGA 775 and Socket 478, and AMD's Socket 478, 754, 939, 940, AM2, AM2+, and AM3.