Comparison · Power supplies

Low-profile 12 V 20 A 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: S-240-12 (250 W vs. 220); Test current: S-240-12 (20 A vs. 18.1); Ripple: S-240-12 (60 mV vs. 1600).

Model	Low-profile 12 V 20 A power supply2019Read review →	S-240-122017Read review →
Voltage, V	12	12
Current, A	20	20
Power, W	240	240
In test, W	220	250
Test current, A	18.1	20
Ripple, mV	1600	60
Efficiency, %	84	84
Review conclusion	With reservations	With reservations

Only in one review: Under load 8.9 V (Low-profile 12 V 20 A power supply); No load 4.2 W (S-240-12).

Low-profile 12 V 20 A power supply: It delivers only about 215–220 W versus 240 W rated; build and filtering are poor, though efficiency is 82–84%.

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.