Comparison · Power supplies

5 V 40 A power supply (200 W), active 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), active cooling (50 A vs. 21.5); Ripple: 5 V 40 A power supply (200 W), active cooling (70 mV vs. 100); Efficiency: 12 V 200 W power supply (87 % vs. 77.5).

Model	5 V 40 A power supply (200 W), active cooling2026Read review →	12 V 200 W power supply2025Read review →
Voltage, V	5	12
Power, W	200	200
Test current, A	50	21.5
Ripple, mV	70	100
Efficiency, %	77.5	87
Protection, A	50	21.5
Review conclusion	Recommended	Recommended

Only in one review: Current 40 A (5 V 40 A power supply (200 W), active cooling); Under load 4.98 V (5 V 40 A power supply (200 W), active cooling); Temperature rise 120 °C (12 V 200 W power supply).

5 V 40 A power supply (200 W), active cooling: Handles 200 W with low ripple and reasonable temperatures, but comes with a cheap fan.

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.