SFX Series     SX550



■ Supports standard SFX form factor

■ 550W continuous power output at 50℃ operating temperature rated for 24/7 operation

■ High efficiency with 80 PLUS Gold certification

■ Class-leading single +12V rail with 45A

■ Silent running 80mm fan with 18dBA minimum

■ Support dual PCI-E 8/6 pin connectors

■ Active PFC

   
         As the standards bearer of SFX PSUs, SilverStone’s continuous breakthrough in power supply miniaturization and power density has resulted in SX550, a standard sized SFX model with high performance but surprisingly affordable price. It has 80 PLUS Gold level of efficiency, 50℃ temperature rating, and reliability of a continuous 550W output for 24/7 operation. Furthermore, the SX550 has a flexible single +12V rail with 45A to support dual 8pin/6pin PCI-E connectors for multi-GPU systems. Equipped with automatic temperature control, its 80mm fan can remain silent during idle and provide adequate cooling during high loading conditions. For SFF enthusiasts looking for the best bang for their bucks, the SX550 is an excellent choice.



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Remark
 
Designed for 80 PLUS Gold level of efficiency to reduce wasted heat and save on electricity.   Built-in 80mm fan has excellent airflow and low noise, perfect for quiet home or office use.
 



Model No.
SST-SX550
Max. DC Output
550W
Power density
693W per liter
Load Range
 
+3.3V +5V +12V +5VSB -12V
Max.(Amps)
21A 22A 45A 2.5A 0.3A
Peak (Amps)
/ / / 3A /
Min.(Amps)
0A 0A 0.1A 0A 0A
Range (%)
±3% ±3% ±3% ±5% ±10%
Line Reg.(%)
±1% ±1% ±1% ±1% ±1%
Ripple(mVp-p)
50mA 50mA 120mV 50mV 120mV
Color
Black(Lead-Free Paint)
combined +3.3, +5V
120W
Combined +12V
540W
Input Voltage
90V ~ 264V
Input Frequency Range
47Hz ~ 63Hz
PFC
Active PFC(PF>0.9 at full load)
Efficiency
87% ~ 90% at 10% ~ 100% loading
MTBF
100,000 hours
Operating temperature
0°C ~ 50°C
Protection
Over Current Protection
Over Power Protection
Over Voltage Protection
Short Circuit Protection
Over Temperature Protection
Connectors
1 x 24 / 20-Pin motherboard connector(300mm)
1 x 8 / 4-Pin EPS / ATX 12V connector(400mm)
2 x 8 / 6-Pin PCIE connector("400mm / 150mm" x 2)
3 x SATA connector(300mm / 200mm / 100mm)
2 x 4-Pin Peripheral connector(300mm / 200mm)
1 x 4-Pin Floppy connector(300mm / 200mm / 200mm)
Cooling System
Single 80mm silent fan
Noise Level
18dBA minimum
Dimension
125 mm (W) x 63.5 mm (H) x 100 mm (D)
4.92" (W) x 2.5" (H) x 3.94" (D)
Weight
1.1 Kg
Form factor
SFX
Certification
80 PLUS Gold
Other
GPU Support list
Compatible with ATX12V v2.4

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Describe
Ver
Size
Download
SX550 High resolution photos
  
3,662 KB
     
SX550 manual
 v1.0 
143 KB
     


SX550 eDM (sx550_edm_en.pdf)
 
152 KB
Multilanguage installation manual
V1.0
8485KB