It is a high-end power supply with active PFC. Instead of having a big 120-mm fan on its bottom it has two 80-mm fans, one at its front and the other at its back. We prefer the 120-mm fan approach, as it provides a better airflow with lower noise level. This power supply has the same size as a conventional ATX power supply, which drew our attention, as Galaxy 1000 W from Enermax had to be bigger in order to accommodate all necessary components to deliver true 1,000 W of power – and this model from Tagan is labeled 1,100 W. This gave us a hint that we needed to take a careful look on its internal design.
Source:Tagan TurboJet TG1100-U95 1,100 W Power Supply