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Rectangular metal ATX power supply unit with matte black finish and single 120mm fan grille

Silverstone

Silverstone ST50F-ESG 500 W ATX power supply 80 Plus Gold

SKU CH-BTK2-YHJJ5 MPN ST50F-ESG

A 500 W ATX unit with 80 Plus Gold efficiency, a single 120 mm fan and a 39 A +12 V rail

  • Max wattage500 W
  • Power efficiency87%~90% @ 20% ~ 100% loading
  • Fan configurationSingle 120 mm HYB fan
  • Power factor correctionActive
  • Main power connector24Pin
  • PCIe power connectors2x 8/6-Pin PCIE connector(500 mm / 150 mm)
  • 80 PLUS Gold efficiency cuts wasted heat
  • Single +12V rail delivers 39A for stable GPU power
  • Tight ±3% voltage regulation with low ripple
  • 120mm HYB fan runs quietly at 40°C
  • 9 SATA power connectors support many drives

Power and efficiency

SilverStone ST50F-ESG is a 500 W ATX power supply built for desktop PCs that need reliable, efficient energy delivery. It carries 80 PLUS Gold certification and uses Active PFC across a 90 to 264 V input range. A single 120 mm HYB fan provides cooling while the unit is rated for continuous operation at up to 40 °C ambient temperature.

Who it suits and who it does not

This unit suits builders who want Gold-rated efficiency and a strong single +12 V rail capable of 39 A for modern graphics cards. It also fits systems needing up to nine SATA power connectors for multiple drives. It is not for configurations that require more than two PCIe power leads or a total output above 500 W.

The deciding specification

The 500 W maximum power rating is the single figure that determines whether this PSU matches your build. If your CPU and GPU combined draw approaches or exceeds this limit, you must select a higher-capacity unit instead.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $77.99
Cheaper than about 76% of the 10,869 comparable items (median $142.99).
Max wattage 500 W
Lower than about 84% of the 930 comparable items (median 850 W).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSilverStone
Model nameST50F-ESG
Product typeATX
Performance
Frequency47–63 Hz
Ports & slots
PCIe power connectors2x 8/6-Pin PCIE connector(500 mm / 150 mm)
SATA power connectors9
Power
Max wattage500 W
Power efficiency87%~90% @ 20% ~ 100% loading
Power factor correctionActive
Main power connector24Pin
Efficiency certification80 PLUS GOLD Certified
Supply voltage90–264 V
+3.3V max. current24A
+5V max. current20A
+12V1 max. current39A
-12V max. current0.3A
+5VSB max. current3A
Size & build
Product dimensions5.91 in(W) × 3.39 in (H) × 5.51 (D)
Product weight4.3 lb (1.95 kg)
Shipping weight2.31 kg
Package size315 × 226 × 112 mm
Environment & compliance
Top fans noise level18 dBA minimum
More details
Fan configurationSingle 120 mm HYB fan
Mean time between failures100,000 h

Questions about this item

What efficiency does the 80 Plus Gold certification guarantee at typical loads?

The unit is rated 87 to 90 percent efficient from 20 to 100 percent load.

What are the physical dimensions and weight for case clearance?

It measures 5.91 inches wide, 3.39 inches high, 5.51 inches deep and weighs 4.3 lbs.

How do I connect the PCIe cables and what mistake should I avoid?

Two fixed cables each carry an 8-pin and a 6-pin head; plug the 8-pin into the GPU and leave the 6-pin unused if not needed, do not force the 6-pin into an 8-pin socket.

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