Seasonic
Seasonic S12III-550GB 550W 80+ Bronze power supply
- Intel ATX 12 V
- 550 W
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Seasonic
Seasonic SSR-500GB3 500W 80+ Bronze power supply
Delivers 500 W through a single +12 V rail with 80 PLUS Bronze efficiency and a 120 mm sleeve-bearing fan controlled by S2FC for quiet operation
- TypeIntel ATX 12 V
- Maximum Power500 W
- Fans120mm Sleeve Bearing Fan
- PFCActive
- Main Connector20+4Pin
- +12V RailsSingle
Options ATX 80+ Bronze (500W)
- ATX 80+ Bronze (500W)
- ATX 80+ Bronze (550W)
- 80 PLUS Bronze certification delivers 85 % efficiency at 50 % load
- Single +12 V rail supplies 40 A for stable GPU power
- 120 mm fan with Smart Silent Fan Control balances cooling and noise
- 105 °C Japanese capacitors ensure long-term reliability
- 140 mm compact length fits most ATX cases
500 W ATX power supply for mainstream builds
The Seasonic S12III Bronze series unit delivers 500 W of continuous power through a single +12 V rail rated at 40 A. It fits standard ATX bays with a 140 mm depth and uses fixed cabling that includes a 20+4 pin main connector, two 6+2 pin PCIe connectors and four SATA power plugs. Over-voltage, under-voltage, over-power and short-circuit protection circuits guard connected components.
Fixed cable set and S2FC fan control
The non-modular loom supplies every cable a typical system needs, eliminating the need to source extra leads. A 120 mm double ball bearing fan runs under Smart and Silent Fan Control, adjusting speed to thermal load so the unit stays quiet during light work and ramps up only when the system demands it. Japanese 105 °C capacitors on the primary side help maintain stable output over long operating periods.
80 PLUS Bronze efficiency at 50 % load
The power supply meets 80 PLUS Bronze certification, reaching 85 % efficiency at 50 % load and 82 % at both 20 % and 100 % load. This reduces waste heat and lowers running costs compared with uncertified units. Input voltage ranges from 110 V to 240 V at 50 Hz or 60 Hz, making it suitable for worldwide use without a voltage switch.
Besonderheiten
- 80 PLUS Bronze certification delivers 85 % efficiency at 50 % load
- Single +12 V rail supplies 40 A for stable GPU power
- 120 mm fan with Smart Silent Fan Control balances cooling and noise
- 105 °C Japanese capacitors ensure long-term reliability
- 140 mm compact length fits most ATX cases
Technische Daten
| Brand | SeaSonic |
|---|---|
| Series | S12III Bronze Series |
| Model | S12III-500GB (SSR-500GB3) |
| Type | Intel ATX 12 V |
| Maximum Power | 500 W |
| Fans | 120mm Sleeve Bearing Fan |
| PFC | Active |
| Main Connector | 20+4Pin |
| +12V Rails | Single |
| PCI-Express Connector | 2 x 6+2-Pin |
| SATA Power Connector | 4 |
| Max PSU Length | 140 mm |
| Modular | Non-Modular |
| Energy-Efficient | 80 PLUS BRONZE Certified |
| Over Voltage Protection | Yes |
| Input Voltage | 110 - 240 V |
| Input Frequency Range | 50/60 Hz |
| Input Current | 8 - 4 A |
| Output | +3.3V@20A, +5V@20A, +12V@40A, [email protected] , [email protected] |
| MTBF | >100,000 Hours |
| Approvals | Safety and EMC: cTUVus, TUV, Gost-R, UkrTEST, CB , BSMI, Semko, CCC, CE, FCC, C-tick Environmental Compliance: Energy Star, RoHS, WEEE, REACH |
| Connectors | 1 x Main Power (24/20 pins) 1 x CPU (8/4 pins) 2 x PCIe (8/6 pins) 4 x SATA 3 x Peripheral 1 x Floppy |
| Features | 80 PLUS Bronze Certified High Efficiency Highly Reliable 105 °C Japanese Brand Capacitor Ample + 12 V Outputs Active Power Factor Correction (99 % PF Typical) LLC resonant converter design Smart & Silent Fan Control (S2FC) 120 mm Fluid Dynamic Bearing (FDB) Fans Soft-Mount Rubber Cushions Patented Easy Swap Connector Universal AC Input (Full Range) Ultra Ventilation (Honeycomb Structure) |
| Dimensions | 3.39" x 5.51" x 5.91" |
| Versandgewicht | 2.02 kg |
| Paketgröße | 267 × 201 × 102 mm |
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Fragen zu diesem Artikel
When will the 120 mm sleeve bearing fan need replacement?
The fan is rated for more than 100,000 hours of operation, so replacement is unlikely during normal use.
What limits continuous output at full 500 W load?
The single +12 V rail delivers up to 40 A and efficiency drops to 82 % at 100 % load, increasing heat inside the unit.
How loud and hot does the PSU get when running all day?
The S2FC fan control adjusts the 120 mm sleeve bearing fan speed to balance noise and cooling, while 85 % efficiency at 50 % load keeps waste heat moderate.
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