With less heat converted by the remaining power, HELIOS E1-500 delivers up to 80% energy efficiency. Accordingly, it won’t waste power and trigger excess heat. The less heat output generated, the less noise arises. Coming in hot with its additional connectors and extra-elongated power cables, the HELIOS E1 - 500 is capable of acclimating itself into PC cases of various sizes without breaking a sweat! The HELIOS E1-500 retains up to 80%+ of its energy conversion efficiency to significantly reduce unnecessary clamor while providing a sensible budget that offers the luxury that one deserves. With its built-in auto-optimization fan speed-to-temperature cooling mechanism, an enjoyable recreational and working environment can be effortlessly achieved!