Comparison · Power supplies

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

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: Temperature rise: S-200-5 (80 °C vs. 135).

Model	5 V 40 A power supply (200 W), passive cooling2026Read review →	S-200-52017Read review →
Voltage, V	5	5
Current, A	40	40
Power, W	200	200
Temperature rise, °C	135	80
Review conclusion	Not recommended	Not recommended

Only in one review: Test current 43.5 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); Ripple 170 mV (5 V 40 A power supply (200 W), passive cooling); Efficiency 80 % (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.

S-200-5: The power supply has serious assembly defects and low-quality components; the author considers it unreliable.

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.