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Comparison · Power supplies

12 V 300 W power supply or WX-DC2440

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: 12 V 300 W power supply (26 A vs. 14); Ripple: 12 V 300 W power supply (130 mV vs. 200); No load: 12 V 300 W power supply (0.9 W vs. 4).

Model12 V 300 W power supply12 V 300 W power supply2025Read review →WX-DC2440WX-DC24402018Read review →
Voltage, V1224
Power, W300300
Test current, A2614
Ripple, mV130200
No load, W0.94
Protection, A2814
Weight, g1100377
Review conclusionNot recommendedWith reservations

Only in one review: Current 15 A (WX-DC2440); In test 250 W (WX-DC2440); Under load 10.65 V (12 V 300 W power supply); Efficiency 85.5 % (WX-DC2440); Temperature rise 83 °C (12 V 300 W power supply).

12 V 300 W power supply: The claimed 300 W is not borne out: it is effectively a 200–250 W supply that enters protection when overheated.

WX-DC2440: The PSU performs fairly well up to 240 W but overheats; modifications and a fan are advised for sustained use.

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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