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Comparison · Power supplies

5 V 40 A power supply (200 W), passive cooling or PTA-200W-12V

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: Test current: 5 V 40 A power supply (200 W), passive cooling (43.5 A vs. 18); Ripple: PTA-200W-12V (60 mV vs. 170); Efficiency: PTA-200W-12V (84 % vs. 80); Temperature rise: PTA-200W-12V (115 °C vs. 135).

Model5 V 40 A power supply (200 W), passive cooling5 V 40 A power supply (200 W), passive cooling2026Read review →PTA-200W-12VPTA-200W-12V2025Read review →
Voltage, V512
Power, W200200
Test current, A43.518
Ripple, mV17060
Efficiency, %8084
Temperature rise, °C135115
Review conclusionNot recommendedWith reservations

Only in one review: Current 40 A (5 V 40 A power supply (200 W), passive cooling); In test 216 W (PTA-200W-12V); Under load 4.99 V (5 V 40 A power supply (200 W), passive cooling); Protection 43.5 A (5 V 40 A power supply (200 W), passive cooling).

5 V 40 A power supply (200 W), passive cooling: Cannot sustain its rated 200 W: major components overheat at full load, and ripple is high.

PTA-200W-12V: This budget supply handles about 216 W, but its rectifier and choke get hot, and low-frequency ripple is high.

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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