Tacens 1RVI850 is an 850W power supply unit designed for demanding builds. It is 85+ ECO-design certified, meaning that it is highly efficient and will save you money on your energy bills. The 99% Efficiency Active Power factor correction (APFC) provides extremely stable and efficient power conversion, compensating for any fluctuations from the main supply. The top-quality ultra-silent 140mm fan with anti-vibration system and smart TACENS ultra-silent fan speed control ensures that your system will run quietly, even under load. The ErP/EuP compliance for under 1W power consumption in off mode and RoHs manufacturing directive to fit European Green/Ecologic standards make this power supply a great choice for environmentally conscious consumers. The powerful SINGLE +12v rail provides extremely stable and powerful performance, perfect for powering demanding components. The 10 top-security system protections included keep your system safe from damage, while the European engineering and internationally tested safety by recognized testing labs ensures that this power supply is built to last. With a full performance during 24/7 operation, and an ultra-long lifetime of up to 100,000 hours, the Tacens 1RVI850 is the perfect choice for demanding builds.