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Black Flex-ATX power supply unit, compact rectangular shape with single 40mm fan and fixed cables

Silverstone Technology

Silverstone Technology RNAB08JGF6NC1 FX500 500W Flex-ATX power supply

SKU CH-M0VS-WKW75 MPN RNAB08JGF6NC1

Flex-ATX 500W unit with 80 PLUS Gold efficiency and a single 40mm silent fan for compact builds

  • ColorBlack
  • TypeFlex ATX
  • Maximum Power500 W
  • FansSingle 40mm silent fan
  • PFCActive PFC (PF>0.9 at full load)
  • Main Connector20+4Pin
  • 80 PLUS Gold efficiency keeps running costs low
  • 500 W continuous output at 40 °C supports 24/7 operation
  • Single +12 V rail delivers 41.67 A for stable GPU power
  • 40 mm silent fan and 150 mm length fit compact Flex-ATX cases
  • Japanese primary capacitor and full protection suite ensure long-term reliability

500W Flex-ATX power supply

The SilverStone FX500 delivers 500W continuous output in the compact Flex-ATX form factor. It targets builders of small-form-factor systems that need reliable power without a standard ATX footprint. A single 40mm fan handles airflow while the unit carries 80 PLUS Gold certification for high efficiency. Japanese primary capacitors support long-term stability.

Thermals noise and power draw

The 40mm silent fan runs at lower speeds during typical loads, keeping acoustic output modest in everyday use. Active PFC maintains a power factor above .9 at full load, reducing waste on the mains side. Efficiency sits between 87 and 90 percent across 20 to 100 percent loading, so less energy becomes heat inside the case. Protections include over-power, over-voltage, short-circuit and over-temperature safeguards.

Sustained load behaviour

Rated for 24/7 operation at 40°C, the FX500 maintains its 500W output without derating during extended sessions. The single +12V rail supplies up to 41.67A with regulation held within +/-3 percent and low ripple for consistent voltage delivery. MTBF is specified at 100000 hours, reflecting confidence in continuous-duty endurance. Non-modular cabling keeps the internal layout fixed but predictable for tight builds.

Points forts

  • 80 PLUS Gold efficiency keeps running costs low
  • 500 W continuous output at 40 °C supports 24/7 operation
  • Single +12 V rail delivers 41.67 A for stable GPU power
  • 40 mm silent fan and 150 mm length fit compact Flex-ATX cases
  • Japanese primary capacitor and full protection suite ensure long-term reliability

Caractéristiques

BrandSilverStone
ModelFX500
ColorBlack
TypeFlex ATX
Maximum Power500 W
FansSingle 40mm silent fan
PFCActive PFC (PF>0.9 at full load)
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector2 x 8 / 6-Pin
SATA Power Connector4
Max PSU Length150 mm
ModularNon-Modular
Efficiency87%~90%(20% to 100% loading)
Energy-Efficient80 PLUS GOLD Certified
ProtectionOver Power Protection
Over Voltage Protection
Short Circuit Protection
Over-Temperature Protection
Input Frequency Range47 - 63 Hz
Output+3.3V@14A, +5V/17A, +12V/41.67A, +5VSB/2.5A, [email protected]
MTBF100,000 hours
Connectors1 x 24 / 20-Pin motherboard connector(350mm)
1 x 8 / 4-Pin EPS / ATX 12V connector(450mm)
2 x 8 / 6-Pin PCIe connector(350mm / 150mm)
4 x SATA connector(350mm / 150mm / 150mm / 150mm)
3 x 4-Pin Peripheral connector(350mm / 150mm / 150mm)
1 x 4-Pin Floppy adapter connector(150mm)
Dimensions81.5 x 150 x 40.5mm
Weight0.96 kg
Poids d’expédition1.32 kg
Dimensions du colis213 × 173 × 99 mm

Questions sur cet article

How do I fit the 150 mm long Flex-ATX unit into a tight case and which cable routing step gets missed?

Mount the 81.5 x 150 x 40.5 mm chassis with the 40 mm fan facing the ventilation cut-out, then route the fixed 350 mm motherboard and 450 mm EPS cables before securing the PSU — builders often forget the non-modular cables cannot be removed later.

What component will likely need replacement first after years of 24/7 operation at 40 °C?

The single 40 mm silent fan is the only moving part; with a 100,000 hour MTBF rating it will wear out before the Japanese primary capacitor or protection circuits.

At what load does the single +12 V rail hit its 41.67 A limit during sustained use?

The rail delivers up to 41.67 A, so continuous draws near 500 W on the 12 V line will reach the limit first, triggering over-power protection.

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