Power UpThe Mwe Bronze V2 Offers 80 Plus Bronze Certification Guaranteeing An Average Efficiency Of 88% At Typical Load. The Dc-To-Dc + Llc Circuit Design Allows The Unit To Convert Power From The Single +12V Rail Reliably Efficiently And Safely For A Better Overall User Experience. The Thermally Sensitive Hdb Fan Cools Based On Temperature Adjusting Constantly As The Systems Needs Change. Not Only Does This Waste Less Power But It Also Creates A Quieter Overall User Experience By Not Running The Fan At Maximum Noise LevelWhen Not Needed. For A Great Mid-Tier Computing Experience Choose The Mwe Bronze V2.80 Plus Bronze CertifiedIt's Important To Understand What Efficiency Is And What The Ratings Actually Mean. The Efficiency Rating Indicates How Much Power Is Retained And/Or Lost When Transferring It From The Wall To Your Components. It Does Not Indicate The Overall Quality Of The Psu. A Psu Doesn't Need An 80 Plus Gold Rating To Be Safe And Reliable. And A Psu With An 80 Plus Gold Rating Isn't Necessarily Either Of Those Things. The Mwe Bronze V2 Guarantees A Typical Efficiency Of 85% While Being Both Safe And Reliable.120Mm Hdb FanThe Constant Struggle Between Cooling And Noise Is As Old As The Consumer Pc Industry Itself. Keeping Your Components Cool Without Having To Hear About It While You Work Is Still One Of The Greatest Challenges For All Fan Based Cooling Technologies. The Mwe Bronze's Solution To This Problem Is A Thermally Sensitive 120Mm Hdb Fan. It Spins Based On The System's Temperature Constantly Adjusting To Keep Your Psu Running Smoothly And Safely With The Minimum Amount Of Noise Required.Single +12V RailGetting Power From The Wall To The Psu And Then To Your Components Is A Tricky Situation. The Power Comes In One Voltage Level But Your Components Need A Different One. That Power Has To First Be Transferred To/Through A Converter In Order To Make It Safe For Your Parts To Use Without Overloading.The Lines/Rails Used To Initially Move Power From The Wall To The Converter Need To Be Reliable And Consistent To Ensure Your System's Overall Performance. That's Why The Mwe Bronze Only Uses One +12V Rail For This Process. This Way All The Components In Your System Are Constantly Fed The Same Power From The Same Source In Order To Guarantee Consistency Between All Connections.Dc-To-Dc Circuit DesignPower Comes In Multiple Voltage Levels. The Wall Delivers Power In One Voltage Level But Your Components Each Need A Specific Voltage To Operate Properly. The Process Of Converting Raw Power From The Wall To The Multiple Voltage Levels Your Components Need Requires Special Components To Complete This Process Quickly Efficiently And Safely. The Mwe Bronze's Dc-To-Dc + Llc Technology Was Painstakingly Crafted To Accomplish This Goal. The Dual Forward Circuit Layout Has Been Designed To Convert 12V Power To 3V And 5V Levels With Minimal Ripple Noise 80 Plus Bronze Efficiency And Reduced Risk To Your Connected Components.Flat Black CablesFor Many Pc Builders With Aesthetics In Mind Cabling Can Be One Of The Most Troublesome Parts Of Assembling A Pc. Cables Can Be Confusing Too Short Or Too Long And They Almost Never Look Good. The Mwe Bronze - V2 Uses Flat And Flexible Black Cables To Help Deal With These Problems. These Cables Are More Discrete And Flexible Making Them Easier To Implement Into Your System While Taking Up Less Space. This Is Especially Useful For Smaller Cases And Preserving Airflow.5 Year WarrantyThe Many Processes Required By A Power Supply Unit In Order To Take Power Directly From The Wall Or Other Fixed Power Source Convert It To The Correct Output Required By The Connected Components And Then Distribute That Power To Said Components Safely Can Be Full Of Risks. This Is Why It's Important For A Psu To Have The Right Protections And Regulations To Ensure This Process Runs Correctly. The Mwe Bronze - V2 Is A Safe Reliable Product And As Such Cooler Master Is Happy To Offer A Standard 5 Year Manufacturing Warranty For All Units In The Series.Main Features- Active Pfc + Forward Topology Design- High Temperature Resistance- Peak Power Tolerance- 80 Plus Bronze 230V Eu Certified- Durable Reliable And Safe- 5 Year WarrantyProduct NameMwe 450 Bronze 230V V2Model NumberMpe-4501-Acabw-BukWattage450WAtx VersionIntel Atx 12V V2.52PfcActive PfcInput Voltage200-240VInput Current4AInput Frequency50-60HzFan Size120MmFan BearingHdbFan Speed1500 RpmNoise20%: 11.18Db-A50%: 17.1Db-A100%: 29.5Db-AEfficiency88% Typically80 Plus Rating80 Plus Bronze Eu 230VErp 2014 Lot 3YesPower Good Signal100 - 500MsHold Up Time>14Ms At 100% Full Load@230VacMtbf>100000 HoursProtectionsOvp / Opp / Scp / Uvp / OtpRegulatoryCcc Ce Tuv-Rh Rcm Eac Ctuvus Fcc Bsmi Kc CbConnections1 X Atx 24 Pin1 X Eps 4+4 Pin6 X Sata3 X Peripheral 4 Pin2 X Pci-E 6+2 PinDimensions ( L X W X H )140 X 150 X 86Mm