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Comparison · Power supplies

PTA-150W-12V or S-120-24

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Ripple: PTA-150W-12V (70 mV vs. 800); Efficiency: S-120-24 (88 % vs. 84); Temperature rise: S-120-24 (97 °C vs. 103).

ModelPTA-150W-12VPTA-150W-12V2025Read review →S-120-24S-120-242019Read review →
Voltage, V1224
Ripple, mV70800
Efficiency, %8488
Temperature rise, °C10397
Review conclusionWith reservationsNot recommended

Only in one review: Current 5 A (S-120-24); Power 150 W (PTA-150W-12V); In test 150 W (S-120-24).

PTA-150W-12V: A budget PSU with acceptable temperature and efficiency, but high low-frequency ripple and insufficient input capacitance.

S-120-24: It delivers the rated 120 W with stable voltage, but build quality and ripple are poor.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.

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