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Comparison · Power supplies

100 W, 12 V, 8.3 A power supply in metal case or 5 V 20 A power supply (100 W)

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 20 A power supply (100 W) (24 A vs. 8.3); Efficiency: 100 W, 12 V, 8.3 A power supply in metal case (84 % vs. 72); Temperature rise: 5 V 20 A power supply (100 W) (135 °C vs. 136).

Model100 W, 12 V, 8.3 A power supply in metal case100 W, 12 V, 8.3 A power supply in metal case2026Read review →5 V 20 A power supply (100 W)5 V 20 A power supply (100 W)2026Read review →
Voltage, V125
Current, A8.320
Power, W100100
Test current, A8.324
Ripple, mV100100
Efficiency, %8472
Protection, A11.524
Temperature rise, °C136135
Review conclusionWith reservationsWith reservations

Only in one review: Under load 4.93 V (5 V 20 A power supply (100 W)); No load 0.5 W (100 W, 12 V, 8.3 A power supply in metal case).

100 W, 12 V, 8.3 A power supply in metal case: A budget model with sensible cost-cutting, but with concerns about heat, the case, and low-frequency ripple.

5 V 20 A power supply (100 W): Well assembled, but effectively a 75 W unit; the output inductor overheats at full power.

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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