Top 11 Best 550w Power Supply you need to have

80 PLUS Bronze certified, with 85% efficiency or higher under typical loads

Single 12V. Rail with DC-DC Converter to improve 3.3V/5V stability

Active Power Factor Correction (PFC)

Heavy-duty protections, including OVP (Over Voltage Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), and OTP (Over Temperature Protection)

3 Year Limited Warranty

Military-grade Certification: All critical capacitors and chokes pass demanding tests to achieve Military-grade Certification

Axial-tech fan design features a smaller fan hub that facilitates longer blades and a barrier ring that increases downward air pressure.

Dual ball fan bearings can last up to twice as long as sleeve bearing designs.

0dB Technology lets you enjoy light gaming in relative silence.

An 80 Plus Bronze Certification is earned with high-quality components that pass rigorous testing.

80cm 8-pin CPU connector (EPS 12V)

6-year warranty included.

ATX PSU, 550 watt non-modular power supply

80 PLUS Bronze certified & 5 Years Warranty

Silent and durable 120mm fan

All cables are black and not ketchup and mustard colored

Full protection: Over Voltage Protection(OVP),Under Voltage Protection(UVP),Over Power Protection(OPP)and Short Circuit Protection(SCP)Over Current Protection

[80+ BRONZE & INTEL C6/C7 STATES READY] - Deliver up to 85% efficiency, BM2 Series optimized to work with all generations of Intel's processors to achieve maximum energy saving

[JAPANESE MAIN CAPACITOR] - High quality Japanese capacitors offer the highest stability, durability, and reliability

[DC TO DC DESIGN] - Efficiently change voltage level for 12V, 5V, and 3V to match the loads to the power supply

[HIGH AMPERAGE SINGLE +12V RAIL] - ensures a stable and reliable supply to other PC components

[Industrial protections] - (OVP) Over Voltage protection, (SCP) short circuit protection, (OPP) over Power Protection, (OTP) over temperature protection, and (OCP) Over current protection

80 plus Gold certified : With 91% and higher under normal loads

LLC+ DC to DC Technology : This circuit design enhances systematic compatibility operation and provide stable voltage outputs. Therefore, maximize system's performance.

High Quality Components : 100% Japanese industrial level 105°C-rated capacitors along with other high quality components, resulting stable wattage output and reliable performance.

Hardware Protection: OPP(Over Power Protection), UVP(Under Voltage Protection), OVP(Over Voltage Protection), SCP(Short Circuit Protection), OCP(Over Current Protection)

5 Years Warranty

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 plus 3.3V and plus 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.

Durable LDB bearing - Silencio technology combines sealed LDB bearings with quiet fan blades delivering a long lifetime of quiet cooling.

80+ BRONZE - Efficiency up to 88% and optimized for C6/C7 States Ready

CONNECTORS – 24 Pin x 1 / 4+4 Pin x 1 / SATA x 6 / PCI-E x 2 / Peripheral x 4 / FDD x 1

ULTRA QUIET 120MM FAN – Dynamic bearing fan s superior cooling performance and silent operation

MAIN JAPANESE CAPACITORS - Japanese capacitors provide superb performance and reliability

LOW RIPPLE NOISE – Ensure excellent power supply stability; keep performance-critical components, such as VGA card, to operate reliably for longer

SINGLE +12V RAIL DESIGN - Powerful 12V+ single rail supports today’s GPU demands supporting DC to DC design for non-stop usage with stable reliable performance

INDUSTRY GRADE PROTECTIONS - (OPP) Over Power, (OVP) Over Voltage, and (SCP) Short Circuit protections

5 Year warranty

EVGA 550W N1 Series

Fan size / Bearing: 120 millimeter sleeve bearing - quiet and intelligent auto fan for near-silent operation

Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP

2 Year & EVGA's 24/7 technical support

Single +12V Rail: The power source is monitored on a single circuit, ensuring consistent output through all connected cables.

DC-to-DC Technology: The DC-to-DC + LLC circuit design offers reliable, stable output to all connected components.

120mm HDB Fan: Employs a responsive fanspeed control, limiting noise to specific cooling requirements during use.

Silent Mode: The fan will not spin under lower loads or standby, ensuring a quiet user experience.

Flat Black Cables: Flat cables to take up less space for easier cable management.

80 Plus: 1000W with 80 Plus Gold certified, reach 90% efficiency or higher under typical loads.

Full Modular：Full modular to improve airflow and reduce clutter,manage cables more easily.

DC-DC structure：DC-DC structure makes the power output more stable and safe.

Quiet Fan：140mm fan keep quiet while maintaining good heat dissipation.

Protection & Warranty：Full protection including OVP/UVP/SCP/OPP/OCP with 10 year warranty.