Semi-Fanless up till 15% load - Experience noise-free operation in normal PC loads under 15% output. Dual Forward and DC-to-DC circuit design - The Dual Forward and DC-to-DC circuit design offers reliability and stability especially significant in +3.3V and +5V output. 5 years warranty - The MasterWatt comes with a 5 year warranty. More Conductive PCI-e Cables - The MasterWatt uses 16AWG cables for PCI-e cables. Less resistance means better efficiency. 80 PLUS Bronze Certified - The 80 PLUS Bronze certification means MasterWatt is independently tested with efficiency of 85%. Durable LDB bearing - Silencio technology combines sealed LDB bearings with quiet fan blades delivering a long lifetime of quiet cooling.