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Comparison · Power supplies

PTA-600W-12V (500 W, 40 A) or S-480-24

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: Efficiency: S-480-24 (86.9 % vs. 84); Temperature rise: S-480-24 (52 °C vs. 105).

ModelPTA-600W-12V (500 W, 40 A)PTA-600W-12V (500 W, 40 A)2025Read review →S-480-24S-480-242017Read review →
Current, A4020
Efficiency, %8486.9
Temperature rise, °C10552
Review conclusionWith reservationsWith reservations

Only in one review: Voltage 24 V (S-480-24); Power 480 W (PTA-600W-12V (500 W, 40 A)); In test 480 W (S-480-24); Ripple 150 mV (PTA-600W-12V (500 W, 40 A)); No load 7.1 W (S-480-24); Price 22.99 $ (S-480-24).

PTA-600W-12V (500 W, 40 A): Ripple is low, but cooling problems limit sustained operation to roughly 30–32 A.

S-480-24: It handled the full load with decent efficiency, but its build and component quality 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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