Comparison · Power supplies

5 V 40 A power supply (200 W), active cooling or S-180-12

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. 14); Ripple: 5 V 40 A power supply (200 W), active cooling (70 mV vs. 650).

Model	5 V 40 A power supply (200 W), active cooling2026Read review →	S-180-122015Read review →
Voltage, V	5	12
Current, A	40	15
Power, W	200	180
Test current, A	50	14
Under load, V	4.98	11.8
Ripple, mV	70	650
Review conclusion	Recommended	With reservations

Only in one review: Efficiency 77.5 % (5 V 40 A power supply (200 W), active cooling); Protection 50 A (5 V 40 A power supply (200 W), active cooling).

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.

S-180-12: Well built, but overheats at maximum current and has high ripple; safer to use at up to 12 A.

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.