Enermax intro's the Liberty Eco power supply series, it features 350W, 400W, 500W and 620W power supplies with an efficiency of at least 80 percent.

ENERMAX already reigns the realms of silence with its patented and technically unbeatable fan control SpeedGuard, but ECO 80+ combines it with another patented innovation from ENERMAX TWISTER MAGNETIC BEARING Technology, which lowers the noise profile compared to MODU82+ or PRO82+ by 1-2dbA in idle load! This is achieved by the magnetic bearing technology, which causes no friction or traction related noise like ordinary ball or sleeve bearings, thus reducing audible noise. The as well patented AirGuard inlet eliminates air turbulences which reduces additional acoustic noise. ECO80+