SilverStone Strider Series SST-ST550-EF 550W 80 PLUS Certified ATX Power Supply
- Product Type: High-Efficiency ATX Power Supply Unit (PSU)
- Brand / Model: SilverStone Strider Series (SST-ST550-EF)
- Total Power Output: 550W Continuous Output (24/7 @ 40°C)
- Efficiency Rating: 80 PLUS Certified (82% ~ 85% Efficiency)
- Power Rail: Single +12V Rail Design (41A / 550W Output)
- Cooling Fan: Silent 120mm Cooling Fan (18 dBA Minimum)
- Cable Type: Fixed / Non-Modular with Flexible Flat Black Cables
- Form Factor & Depth: Compact ATX (PS2) – 140mm Depth
- PCIe Connectors: 2x 8/6-Pin PCIe Connectors for Mid-Range GPUs
- Protections: Core Protection Suite (OVP, UVP, OPP, SCP)
1,990EGP
2 in stock
2 in stock
Description
The SilverStone Strider Series SST-ST550-EF 550W Power Supply is designed to deliver stable, clean, and continuous power for daily desktop systems and mainstream gaming setups. Engineered to maintain 24/7 continuous power output at up to 40°C operating temperatures, it provides reliable performance and high efficiency to meet system demands with stability.
Featuring 80 PLUS certification with up to 85% efficiency under typical operating loads, the SST-ST550-EF reduces wasted power, minimizes heat generation, and ensures lower energy consumption. Designed with a class-leading single +12V rail delivering up to 41A, it maintains steady voltage regulation during peak system demands. Its low-noise 120mm cooling fan running as quiet as 18 dBA, combined with flexible flat black cabling and a short 140mm chassis depth, guarantees effortless cable routing and broad case compatibility.
Key Features & Performance Highlights
- 550W Continuous Power Output: Delivers robust 24/7 continuous power delivery at an operational temperature of 40°C.
- 80 PLUS Certified Efficiency: Achieves 82% to 85% efficiency across typical load ranges to reduce thermal output and overall power draw.
- Class-Leading Single +12V Rail (41A): Supplies up to 550W on the +12V rail for uninterrupted stability under GPU and CPU heavy loads.
- Silent 120mm Thermal Fan: Intelligent automatic fan speed control operates quietly starting at a low 18 dBA noise level.
- Flexible Flat Black Cables: Pliable ribbon-style flat cables allow tighter folding, easier routing, and cleaner overall case airflow.
- Compact 140mm Housing Depth: Compact ATX footprint ensures easy installation in small chassis spaces with room for cable tucking.
- Dual PCIe Connectors: Includes 2x 8/6-Pin PCIe power connectors to power modern dedicated entry-level and mainstream graphics cards.
- Core Electrical Safety Guards: Integrated Over Voltage (OVP), Under Voltage (UVP), Over Power (OPP), and Short Circuit (SCP) protections guard your hardware.
Technical Specifications
| Feature | Details |
|---|---|
| Brand & Series | SilverStone Strider Series |
| Model / Part Number | SST-ST550-EF (Safety Cert. SST-AX0550FCWH-A) |
| Max DC Output Capacity | 550 Watts (Continuous Power) |
| Efficiency Rating | 80 PLUS Certified (82% ~ 85% at 20% ~ 100% Load) |
| Form Factor Standard | ATX (PS2) |
| Cable Design | Fixed (Non-Modular) with Flat Black Cables |
| Input Voltage Range | 180V ~ 264V Vrms (Active PFC, PF >0.9) |
| +12V Rail Output | Single +12V Rail (41A / 550W Max) |
| Combined +3.3V & +5V Output | 100 Watts (18A / 18A Max) |
| Cooling Fan | Silent 120mm Cooling Fan |
| Acoustics / Noise Level | 18 dBA minimum |
| Main Connectors | 1x 24/20-Pin Motherboard, 1x 8/4-Pin EPS/ATX 12V |
| GPU & PCIe Connectors | 2x 8/6-Pin PCIe Connectors |
| Peripheral Connectors | 6x SATA, 2x 4-Pin Peripheral (Molex) |
| Circuit Protections | OVP, UVP, OPP, SCP |
| MTBF / Operating Temp | 100,000 Hours | 0°C to 40°C continuous |
| Dimensions & Weight | 150 mm (W) x 86 mm (H) x 140 mm (D) | 1.38 kg |
