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Comparison · Power supplies

12 V 250 W power supply or S-240-12

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: In test: 12 V 250 W power supply (300 W vs. 250); Test current: 12 V 250 W power supply (25 A vs. 20); Ripple: S-240-12 (60 mV vs. 120); Efficiency: 12 V 250 W power supply (88 % vs. 84); No load: 12 V 250 W power supply (0.9 W vs. 4.2).

Model12 V 250 W power supply12 V 250 W power supply2025Read review →S-240-12S-240-122017Read review →
Voltage, V1212
Power, W250240
In test, W300250
Test current, A2520
Ripple, mV12060
Efficiency, %8884
No load, W0.94.2
Review conclusionWith reservationsWith reservations

Only in one review: Current 20 A (S-240-12); Protection 28 A (12 V 250 W power supply); Temperature rise 75 °C (12 V 250 W power supply); Weight 1100 g (12 V 250 W power supply).

12 V 250 W power supply: Low ripple and thermal protection are positives, but it is genuinely a 200–250 W supply with an overly high protection current.

S-240-12: An average Chinese power supply with low ripple and stable voltage, but middling build quality and unknown components.

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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