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Comparison · Power supplies

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

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. 21.5); Ripple: 12 V 200 W power supply (100 mV vs. 170); Efficiency: 12 V 200 W power supply (87 % vs. 80); Temperature rise: 12 V 200 W power supply (120 °C vs. 135).

Model5 V 40 A power supply (200 W), passive cooling5 V 40 A power supply (200 W), passive cooling2026Read review →12 V 200 W power supply12 V 200 W power supply2025Read review →
Voltage, V512
Power, W200200
Test current, A43.521.5
Ripple, mV170100
Efficiency, %8087
Protection, A43.521.5
Temperature rise, °C135120
Review conclusionNot recommendedRecommended

Only in one review: Current 40 A (5 V 40 A power supply (200 W), passive cooling); Under load 4.99 V (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.

12 V 200 W power supply: Well designed, with low ripple and little heating; one output diode assembly runs hotter than desirable.

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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