ASUS TUF Gaming 550W ATX12V 80 Plus Bronze Certified Non-Modular Power Supply TUF-GAMING-550B

Brains and Bronze: The high-quality components used in TUF Gaming power supplies ensure efficient and reliable operation worthy of an 80 PLUS Bronze Certification. The efficiency also leads to low temperatures within the PSU, facilitating an even quieter acoustic profile for the 135 mm Axial-tech fan.
Better, faster, stronger: Originally developed for top-end ROG graphics cards, Axial-tech fan design features a smaller fan hub that facilitates longer blades and a barrier ring that increases downward air pressure. For TUF Gaming series PSUs, we've scaled that design to 135 mm so it keeps things cool at low RPMs while producing less noise.
Quiet intelligence: An onboard controller brings the 135 mm fan to a standstill when thermal design power (TDP) is below 30%, letting you enjoy light gaming in relative silence. Above 30% TDP, the fans automatically start up again.
Built For The Long Haul: TUF Gaming series PSUs bring military-grade components and a robust cooling solution together to create a power platform you can depend on. High-quality capacitors and chokes undergo a myriad of tests, including extreme temperatures and vibration tests, to ensure they meet rigorous military specifications.