Test protocol

Comparison of power supplies: ripple, efficiency, and temperature rise

Switching power supplies the author has taken apart and tested on an electronic load. The table includes only models whose ripple or efficiency was measured in the review; use the filter above to select the required voltage.

161model
73review recommends
2015–2026review years

In brief: In the table 161 model: review recommends 73, with reservations 77, does not recommend 11. Lowest ripple in the test: YS-65SCB, 7 mV. Highest efficiency: MeanWell EPP-500-54, 95 %. Highest current: MeanWell SP-320-5, 55 A.

Quick guide: what to choose

Cleanest outputYS-65SCBThe PSU had low ripple and handled overload confidently, but the components were cost-cut.

High efficiency at high powerMeanWell EPP-500-54A compact PSU with high power and efficiency; the author notes its limited adjustment range and transformer heating.

12 V, coolest in the comparison100 W 12 V 8.3 A power supply, sealed case with enhanced reliabilityA good supply with low ripple and heat, higher efficiency and active PFC, but a relatively high price.

12 V, high currentLS-300W-12VThe 300 W unit impressed the author: protection, temperatures and ripple were all satisfactory.

24 V for everyday useLS-200W-24VThe author recommends it, praising its build, ripple and temperatures; efficiency is about 92%.

Lots of watts for little money1500 W 68 V power supplyThe power supply handles high loads well, but it buzzes and has high ripple.

All models

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Model	Output	Ripple, test	Max. efficiency	Temperature rise	Price	Review conclusion
100 W power supply, 12 V 8.3 A, metal case2026	12 V / 8.3 A	100 mV	84 %	103 °C	—	With reservations	A budget supply with low high-frequency ripple, but noticeable low-frequency spikes and a hot transformer at full load. Read review
100 W sealed power supply, 12 V 8.3 A2026	12 V / 8.3 A	800 mV	87.5 %	58 °C	—	With reservations	It handles heat well and operates steadily, but ripple reaches 800 mV at maximum current. Read review
Ultra-compact 100 W power supply, 12 V 8.3 A2026	12 V / 8.3 A	650 mV	89.5 %	95 °C	—	With reservations	This compact supply manages about 7 A, but the author advises roughly 6 A for continuous use; ripple spikes are very large. Read review
36 W 3 A adapter2026	12 V / 3 A	400 mV	84 %	130 °C	—	With reservations	Actual maximum power is about 30 W, with 20–25 W sustainable; ripple is moderate. Read review
36 W 3 A desktop power supply2026	12 V / 3 A	—	84.5 %	126 °C	—	With reservations	Delivers 3 A with little thermal headroom; the overcurrent threshold is very high and there is no thermal protection. Read review
Sealed 36 W 3 A power supply2026	12 V / 3 A	800 mV	84 %	70 °C	—	With reservations	The protection is set correctly and heat is not a concern, but output ripple is high. Read review
72 W 6 A desktop power supply2026	12 V / 6 A	—	85.5 %	126 °C	—	Not recommended	Heating limits sustained current to 3.5–4 A rather than the rated 6 A; ripple reaches about 650 mV. Read review
Waterproof, enclosed, 100 W 8.3 A2026	12 V / 8.3 A	1000 mV	86 %	98 °C	—	With reservations	Neatly made, but the author advises limiting it to 75–80 W because of heating; ripple is high. Read review
Sealed 100 W 8.3 A power supply2026	12 V / 8.3 A	230 mV	86 %	60 °C	—	Recommended	Protection is set correctly, ripple and heating are within limits; the author considers it a reasonably good 100 W supply. Read review
120 W 10 A desktop power supply2026	12 V / 10 A	—	85.5 %	135 °C	—	Not recommended	Neatly assembled, but actual power is only about 60 W instead of 120 W, and it overheats at 6 A. Read review
100 W 12 V 8.3 A power supply, perforated case2026	12 V / 8.3 A	—	86.5 %	92 °C	—	With reservations	A decent conventional supply, though its protection threshold is high and ripple could be lower. Read review
100 W 12 V 8.3 A power supply, sealed case2026	12 V / 8.3 A	170 mV	85.5 %	78 °C	—	Recommended	A robust supply with typical performance; the author notes only a slightly undersized input capacitor. Read review
100 W 12 V 8.3 A power supply, sealed case with enhanced reliability2026	12 V / 8.3 A	100 mV	88 %	46 °C	—	Recommended	A good supply with low ripple and heat, higher efficiency and active PFC, but a relatively high price. Read review
HCF-60-12HCF · 2026	12 V / 5 A	40 mV	—	96 °C	—	Recommended	A decent PSU with about 40 mV ripple at maximum load and moderate heating. Read review
HCF-100-12HCF · 2026	12 V / 8.3 A	30 mV	—	115 °C	—	With reservations	Ripple is 30 mV, but the transformer heats noticeably at rated load. Read review
HCF-150-12HCF · 2026	12 V / 12.5 A	30 mV	—	94 °C	—	Recommended	The PSU showed low ripple and good thermal headroom, even under overload. Read review
HCF-200-12HCF · 2026	12 V / 16.5 A	60 mV	—	95 °C	—	With reservations	It handles overload with headroom, but ripple and inductor heating draw some criticism. Read review
HCF-250-12HCF · 2026	12 V / 21 A	85 mV	—	103 °C	—	Recommended	It performs well at rated load and nearly 15% overload, though its protection threshold is set too high. Read review
HCF-320-12HCF · 2026	12 V	40 mV	—	100 °C	—	Recommended	Very low ripple and headroom for 360 W operation, though the inductor heats noticeably under overload. Read review
HCF-320-24HCF · 2026	24 V / 14 A	40 mV	—	114 °C	—	Recommended	Ripple is about 40 mV, with thermal headroom even at maximum output. Read review
24 V 2 A power supply (adapter, first model)2026	24 V / 2 A	70 mV	—	130 °C	—	With reservations	Ripple is good, but it overheats above 1.5 A; the author also doubts the input capacitor rating. Read review
24 V 2 A power supply (desktop)2026	24 V / 2 A	400 mV	—	85 °C	—	Recommended	It handled 2 A without overheating; the main drawback is elevated high-frequency ripple. Read review
12 V 2 A power supply2026	12 V / 2 A	230 mV	—	131 °C	—	With reservations	Ripple is acceptable for a budget unit, but it overheats at 2 A; sustained use is better limited to 1.5 A. Read review
12 V 3 A power supply (adapter)2026	12 V / 3 A	140 mV	—	88 °C	—	Recommended	After the revisions, it handles 3.2 A without overheating, with acceptable safety and ripple. Read review
12 V 8 A power supply2026	12 V / 8 A	60 mV	—	90 °C	—	Recommended	It runs at 8 A without overheating, with low ripple and no concerns from the author. Read review
5 V 10 W power supply2026	5 V / 2 A	300 mV	78 %	117 °C	—	Recommended	A decent supply delivers up to 15 W, though a lower protection threshold and an output filter would help. Read review
5 V 25 W power supply2026	5 V / 5 A	280 mV	—	130 °C	—	With reservations	Decent overall, but diode overheating limits it to 4 A for continuous use. Read review
5 V 40 W power supply2026	5 V / 8 A	40 mV	74 %	135 °C	—	Recommended	Very decent: it handles 10 A easily with low ripple, but needs a stronger inductor for continuous 10 A. Read review
5 V 100 W power supply2026	5 V / 20 A	100 mV	72 %	135 °C	—	With reservations	A decent 75 W supply, but its output inductor overheats at 100 W. Read review
5 V 150 W power supply2026	5 V / 30 A	70 mV	78 %	135 °C	—	With reservations	Actual power is about 75% of rating; the inductor and diode assembly overheat at full load. Read review
5 V 200 W active power supply2026	5 V / 40 A	70 mV	77.5 %	102 °C	—	Recommended	It easily delivers 200 W with low ripple and moderate heating, but the fan and input capacitors are concerns. Read review
48 V, 2.1 A, 100 W (standard model)2026	48 V / 2.1 A	50 mV	86 %	64 °C	—	With reservations	Well built and runs cool, but its protection limits practical continuous power to about 75 W. Read review
48 V, 4.1 A, 200 W (standard model)2026	48 V / 4.1 A	60 mV	88.5 %	78 °C	—	With reservations	Well built and efficient, but the author puts its realistic continuous power at about 150 W. Read review
48 V, 8.3 A, 400 W (standard model)2026	48 V / 8.3 A	—	90 %	90 °C	—	With reservations	A well-made supply with good test results, but the author considers about 250 W its realistic continuous power. Read review
48 V, 2.1 A, 100 W (track)2026	48 V / 2.1 A	800 mV	87 %	58 °C	—	With reservations	A compact supply with honest output and low heating, but its protection trip current is much too high. Read review
QS-18-122026	12 V / 1.5 A	350 mV	85 %	93 °C	—	Recommended	A decent supply, but the author recommends keeping continuous load to 15 W. Read review
QS-36-122026	12 V / 3 A	350 mV	85 %	95 °C	—	Recommended	A decent supply with about 30 W real capacity, though ripple swings considerably with no load. Read review
QS-48-122026	12 V / 4 A	300 mV	85 %	115 °C	—	Not recommended	It falls short of 48 W: the transformer overheats, and the author considers it closer to a 36 W model. Read review
QS-60-122026	12 V / 5 A	200 mV	87 %	130 °C	—	With reservations	Relatively decent, but the author puts its real capacity at no more than 60 W, possibly around 50 W. Read review
QS-72-122026	12 V / 6 A	200 mV	87 %	130 °C	—	With reservations	Relatively decent, but the author says it is effectively the same 60 W supply, not a true 72 W model. Read review
12 V 100 W power supply2026	12 V / 8.33 A	400 mV	89 %	128 °C	—	Recommended	The 100 W model reaches about 89% efficiency and pleased the author, though its output rectifier transistor gets very hot. Read review
12 V 200 W power supply2026	12 V / 16.86 A	150 mV	91 %	110 °C	—	Recommended	The 200 W model achieved 90–91% efficiency and good temperatures, but has low input capacitance and noticeable 100 Hz ripple. Read review
12 V 60 W power supply2025	12 V	150 mV	85.5 %	58.6 °C	—	With reservations	Low ripple and acceptable heating at 60 W, but the protection threshold is set much too high. Read review
12 V 75 W power supply2025	12 V	170 mV	85.5 %	68 °C	—	With reservations	Effectively the same as the 60 W model: ripple is fine, but heating is high at 75 W. Read review
12 V 100 W power supply2025	12 V / 8.3 A	45 mV	85.5 %	70 °C	—	Recommended	Good ripple and protection; in practice, it is a quality unit of about 100–110 W. Read review
12 V 120 W power supply2025	12 V / 10 A	50 mV	—	66.5 °C	—	With reservations	Low ripple, but in reality it is a 100–110 W unit rather than a full 120 W supply. Read review
12 V 250 W power supply2025	12 V	120 mV	88 %	75 °C	—	With reservations	Reliable at roughly 200–250 W; the protection threshold is high, but ripple is low. Read review
12 V 300 W power supply2025	12 V	130 mV	—	83 °C	—	With reservations	Effectively a 250 W model: thermal protection activates under sustained overload, while ripple is acceptable. Read review
12 V 350 W power supply2025	12 V	50 mV	88 %	89 °C	—	Recommended	Low ripple and thermal protection; the author puts its realistic sustained current closer to 25 A. Read review
12 V 72 W power supply$7 · 2025	12 V	120 mV	—	135 °C	$7	Recommended	A well-built compact PSU, but it overheats during sustained 6 A operation without airflow. Read review
24 V 72 W power supply$7 · 2025	24 V / 3 A	80 mV	92.5 %	107 °C	$7	Recommended	The 24 V version had lower ripple and sustained 4 A operation despite a 3 A rating. Read review
12032025	12 V / 3 A	200 mV	85 %	—	—	With reservations	Generally decent, but its protection trips far above the rated current; the author suggests staying below 2.5 A for continuous use. Read review
12042025	12 V / 4 A	350 mV	86 %	107 °C	—	With reservations	It can supply 4 A, but the author recommends limiting continuous use to about 3–3.5 A. Read review
12062025	12 V / 6 A	40 mV	85 %	133 °C	—	Not recommended	It overheats at just 4 A; the author considers it a 3 A supply and says modification is not worthwhile. Read review
12072025	12 V / 7 A	400 mV	86 %	115 °C	—	With reservations	Generally acceptable, but its practical operating current is about 5 A; it overheats at 6 A. Read review
12082025	12 V / 8 A	120 mV	86 %	126 °C	—	With reservations	Practical output is no more than 6 A; ripple is low, but it overheats severely at 7 A. Read review
AD-12-2A2025	12 V / 2 A	250 mV	76 %	128 °C	—	With reservations	It can run continuously at 2 A, but the output diode gets hot; the author recommends 1.7–1.8 A instead. Read review
AD-12-3A2025	12 V / 3 A	30 mV	84 %	101 °C	—	Recommended	It sustains 3.5 A with modest temperatures and low high-frequency ripple; the author notes a safety concern. Read review
HCF-18L2025	12 V / 1.5 A	300 mV	84 %	77 °C	—	With reservations	Delivers its rated power with acceptable ripple and stability, but has poor electrical safety. Read review
HCF-36L2025	12 V / 3 A	300 mV	84 %	102 °C	—	Not recommended	Ripple is tolerable, but the unit generates substantial interference; the author does not recommend it. Read review
HCF-48L2025	12 V / 4 A	400 mV	83 %	117 °C	—	Not recommended	It generates strong interference and overheats under sustained rated load; the author does not recommend it. Read review
HCF-1002025	12 V / 8.3 A	200 mV	89 %	110 °C	—	Recommended	The author praises its stability, efficiency and low ripple, recommending it with a practical power rating of 70–80 W. Read review
HCF-36R2025	12 V / 3 A	370 mV	86 %	120 °C	—	With reservations	Suitable for only about 18–20 W continuous output; at 2 A the diode heats to nearly 120 °C. Read review
HCF-60R2025	12 V / 5 A	220 mV	91 %	111 °C	—	Recommended	The better-performing GaN-based unit; the author recommends about 3.5–4 A for continuous use. Read review
LS-300W-24V2025	24 V / 12.5 A	180 mV	—	—	—	Recommended	The PSU impressed the author under load, though its protection threshold is too high and a capacitor presses against the cover. Read review
LS-60W-24V2025	24 V / 2.5 A	20 mV	—	72 °C	—	Recommended	The supply handled testing and heat well; the author notes only unusual ripple. Read review
LS-100W-24V2025	24 V / 4.17 A	60 mV	87 %	76 °C	—	Recommended	The author praises its operation and thermal headroom; ripple is low despite an unusual low-frequency component. Read review
LS-200W-24V2025	24 V / 8.3 A	150 mV	92 %	90 °C	—	Recommended	The author recommends it, praising its build, ripple and temperatures; efficiency is about 92%. Read review
LS-400W-24V2025	24 V / 16.6 A	200 mV	92.5 %	114 °C	—	Recommended	A very good supply, but the author advises against overloading it and recommends lowering its overcurrent threshold. Read review
LS-300W-12V2025	12 V / 25 A	300 mV	91 %	95 °C	—	Recommended	The 300 W unit impressed the author: protection, temperatures and ripple were all satisfactory. Read review
LS-400W-12V2025	12 V / 33 A	400 mV	92 %	130 °C	—	With reservations	The 400 W model delivered 410 W, but ran hot above 32 A and its protection threshold was incorrectly set. Read review
MN-400-122025	12 V / 33 A	200 mV	85 %	81 °C	—	With reservations	A well-built PSU with low ripple, but it delivers 200–250 W instead of the claimed 400 W. Read review
12 V 100 W power supply2025	12 V	25 mV	—	106 °C	—	Recommended	A good supply with low ripple, properly set protection, and acceptable temperatures. Read review
12 V 150 W power supply2025	12 V	—	86.5 %	107 °C	—	With reservations	A decent supply with accurately set protection, though the transformer runs hot and the input capacitor is undersized. Read review
12 V 200 W power supply2025	12 V	100 mV	87 %	120 °C	—	Recommended	Well designed, with low ripple and modest heating, though one output diode assembly gets too hot. Read review
12 V 33 A 400 W power supply2025	12 V / 33 A	180 mV	84 %	110 °C	—	With reservations	Neatly built, but realistically suited to about 100 W continuous, not the claimed 400 W. Read review
24 V 16.7 A 400 W power supply with 0–10 V control2025	24 V / 16.7 A	100 mV	86 %	117 °C	—	With reservations	Well built, but delivers about 200–240 W continuously, well below the claimed 400 W. Read review
12 V 10 W power supply2025	12 V	400 mV	—	—	—	With reservations	It sustains nearly twice its rated power, but overload protection is set too high and ripple is substantial. Read review
12 V 24 W power supply2025	12 V	250 mV	—	—	—	Recommended	The author liked it best for its low ripple, power headroom, and stable operation under sustained load. Read review
12 V 36 W power supply2025	12 V	600 mV	—	—	—	With reservations	It handles rated power with stable voltage, but output capacitance is low and ripple is high. Read review
FSA-12V 100W2025	12 V	200 mV	—	53 °C	—	Recommended	It works reliably at about 60 W from either 115 V or 230 V input, with acceptable ripple and case temperature. Read review
60W-12V, IP672025	12 V	500 mV	—	130 °C	—	With reservations	It handled sustained operation at 5 A, but ripple is high and the output capacitors are rated for only 16 V. Read review
12 V 100 W2025	12 V / 8.3 A	450 mV	—	135 °C	—	With reservations	The board heated noticeably at 7 A; the author thinks the potted unit may manage its rated current. Read review
12 V 150 W 12.5 A2025	12 V / 12.5 A	600 mV	—	116 °C	—	With reservations	It is generally decent, but ripple is high at maximum load and input capacitance is too low for reduced mains voltage. Read review
12 V 200 W, 16.7 A2025	12 V / 16.7 A	500 mV	—	120 °C	—	Recommended	It unexpectedly endured testing up to 265 W; the author expects it to work well at its rated 200 W. Read review
24 V, 300 W, 12.5 A2025	24 V / 12.5 A	75 mV	—	135 °C	—	Recommended	The author liked its topology and low ripple, but the board overheated at maximum load without potting. Read review
PTA-250W-12V2025	12 V / 20.8 A	50 mV	82 %	140 °C	—	With reservations	A good supply for about 200 W continuous, but at 250 W the diode assembly and inductor overheat. Read review
PTA-360W-12V2025	12 V / 30 A	100 mV	84 %	130 °C	—	With reservations	A well-built supply with good results, but the author advises against continuous loads above 330 W. Read review
PTA-120W-12V2025	12 V	40 mV	81 %	92 °C	—	With reservations	A budget PSU with good high-frequency ripple and power headroom, but noticeable low-frequency ripple. Read review
PTA-150W-12V2025	12 V	70 mV	84 %	103 °C	—	With reservations	A budget PSU with acceptable temperature and efficiency, but high low-frequency ripple and insufficient input capacitance. Read review
PTA-200W-12V2025	12 V	60 mV	84 %	115 °C	—	With reservations	It can deliver about 216 W, but the output rectifier and inductor run hot, and low-frequency ripple is high. Read review
MN-100W12V2025	12 V / 8.3 A	150 mV	84.5 %	—	—	Recommended	It showed low ripple, full output power and extra headroom, though its input capacitor was counterfeit. Read review
CTG-150W-12VCTG · 2025	12 V / 12.5 A	100 mV	87 %	100 °C	—	Recommended	It delivers its rated power with low ripple and has useful headroom at reduced input voltage. Read review
CTG-200W-12VCTG · 2025	12 V / 16.7 A	160 mV	86.5 %	118 °C	—	Recommended	The author liked its topology and overvoltage protection, but found the input capacitor undersized. Read review
CTG-300W-12VCTG · 2025	12 V / 25 A	300 mV	—	105 °C	—	With reservations	It is effectively a 230–250 W supply; the undersized input capacitor and higher ripple are drawbacks. Read review
60 V 300 W power supply2024	60 V	350 mV	87 %	150 °C	—	Recommended	After modifications, it works well, with 85–87% efficiency and low high-frequency ripple, though it has shortcomings. Read review
68 V 800 W power supplyRuiDeng · 2024	68 V	—	90 %	95 °C	—	Recommended	The author liked the new version, found its test results good, and recommends it. Read review
1500 W 68 V power supply$55 · 2024	68 V	3500 mV	91 %	—	$55	Recommended	The power supply handles high loads well, but it buzzes and has high ripple. Read review
Sanmim GPA50A-12Sanmim · 2023	12 V / 4.2 A	55 mV	—	128 °C	—	Recommended	The author is very pleased with its performance and build, but says the overheat protection is too slow to act. Read review
PLF12A-15Sanmim · 2023	15 V	30 mV	80 %	97.7 °C	—	Recommended	The compact power supply showed good stability, low ripple, and solid performance under overload. Read review
Sanmim GPN30E-15Sanmim · $6,76 · 2023	15 V / 2 A	80 mV	82 %	100 °C	$6.76	Recommended	The supply remains stable at twice its rated load, but has cheap terminals and a hot output diode. Read review
MeanWell EPP-500-54MeanWell · 2021	54 V	150 mV	95 %	115 °C	—	Recommended	A compact PSU with high power and efficiency; the author notes its limited adjustment range and transformer heating. Read review
BP60A-SOven · $70 · 2021	24 V	30 mV	—	92 °C	$70	Recommended	The PSU showed low ripple, accurate voltage and moderate heating, but the author notes its high price. Read review
BP120B-D9-24COven · $110 · 2021	24 V / 5 A	80 mV	87 %	125 °C	$110	With reservations	It delivers its rated power and holds voltage accurately, but runs hot and is expensive. Read review
Sanmim SM-PLG06A, 15 V versionSanmim · $13,99 · 2021	15 V	—	75 %	178 °C	$13.99	Recommended	The compact supply works well at 6 W and sustains 9 W, but it lacks a fuse. Read review
YS-65SCB$11,99 · 2021	24 V / 2.7 A	7 mV	87 %	—	$11.99	Recommended	The PSU had low ripple and handled overload confidently, but the components were cost-cut. Read review
YS-U50SL$7,99 · 2021	24 V / 2.3 A	15 mV	88 %	—	$7.99	Recommended	A compact PSU with low ripple and ample power headroom; the author notes that its thermal protection is poorly calibrated. Read review
UM-U120S$11,99 · 2021	12 V / 10 A	220 mV	85 %	100 °C	$11.99	With reservations	Overall, the power supply is decent, but needs cooling for sustained operation at its rated power. Read review
24 V 6 A power supply from GeekcreitGeekcreit · 2021	24 V / 7.5 A	200 mV	89 %	104 °C	—	With reservations	A reasonable alternative to other supplies, but the transformer overheats under a sustained 5 A load. Read review
PS-220/24-1,5Novatek-Electro · 2021	24 V / 1.5 A	250 mV	—	60 °C	—	With reservations	A reliable industrial PSU with power headroom, but with high ripple and excessive no-load consumption. Read review
MeanWell LRS-100-48MeanWell · 2020	48 V	80 mV	91.5 %	70 °C	—	Recommended	The supply meets its stated specifications, and the author recommends it. Read review
12 V 5 A power supplyLight Route · 2020	12 V / 5 A	15 mV	—	72 °C	—	Recommended	The supply showed good regulation and low ripple; after warming up it can deliver about 5.5 A continuously. Read review
24 V 2.5 A power supplyLight Route · 2020	24 V / 2.5 A	20 mV	90 %	60 °C	—	With reservations	Low ripple and good regulation, but after warming up the supply cannot sustain its rated 2.5 A. Read review
NVVV S-800-70NVVV · 2020	70 V / 11.4 A	500 mV	87 %	230 °C	—	With reservations	A generally decent power supply, but its snubber resistors should be replaced and the fan is noisy. Read review
MeanWell PSC-160A-CMeanWell · 2020	13.8 V / 7.6 A	270 mV	88 %	—	—	With reservations	Well-built and efficient, but it whistles, runs hot, and has high ripple. Read review
12 V 5 A power supply2020	12 V / 5 A	200 mV	86 %	—	—	With reservations	All five boards worked reliably and pleased the author, but component quality and board condition varied. Read review
WX-DC2416Geekcreit · $9 · 2020	36 V / 6.5 A	200 mV	—	—	$9	Recommended	WX-DC2416 performs better than the other unit and delivers its rated power, but sustained power is at most 150 W. Read review
24 V 8–10 A power supply2020	24 V / 10 A	650 mV	87 %	70 °C	—	With reservations	It works, but without active cooling sustained output above 150–160 W is not advised; ripple reaches 650 mV. Read review
MeanWell SP-320-5MeanWell · 2020	5 V / 55 A	—	80 %	75 °C	—	Recommended	The used supply handled 65 A, with low ripple and strong test results. Read review
68 V 600 W power supply2019	68 V / 8.5 A	650 mV	87 %	240 °C	—	With reservations	After modification, the supply is usable, but its snubbers overheat, the fan is noisy, and output voltage varies. Read review
Meanwell LRS-350-24Meanwell · 2019	24 V / 14.6 A	40 mV	90 %	75 °C	—	Recommended	The PSU showed excellent stability, did not overheat, and had acceptable ripple. Read review
TMP-30124CTraco Power · 2019	24 V / 1.25 A	300 mV	85 %	95 °C	—	Recommended	The PSU handles overloads well and has low ripple, but draws about 2 W with no load. Read review
DPS-460EB AHP · 2019	12 V / 38.3 A	600 mV	92 %	60 °C	—	With reservations	This compact, well-built used PSU handled 470 W, but has high ripple and a loud fan. Read review
12 V 20 A (240 W) power supply2019	12 V / 20 A	1600 mV	84 %	—	—	Not recommended	It fails to deliver its rated power, and its active cooling is paired with no overheat protection. Read review
S-120-242019	24 V / 5 A	800 mV	88 %	97 °C	—	Not recommended	It delivers the rated 120 W with stable voltage, but build quality and ripple are poor. Read review
SANMIM GFA15A-5Sanmim · 2019	5 V / 3 A	20 mV	77 %	113 °C	—	With reservations	A compact PSU with low ripple and strong overload performance, but its over-power protection is set far too high. Read review
SANMIM GPT70A-12SANMIM · $12 · 2019	12 V	60 mV	87 %	100 °C	$12	Recommended	A neatly built supply with protections and low ripple; the author preferred it to unbranded alternatives. Read review
GFA20A-12SANMIM · $6,5 · 2019	12 V / 1.7 A	35 mV	—	70 °C	$6.5	Recommended	The power supply showed ample power headroom, low heat and low ripple; the author recommends it. Read review
PLF12A-12SANMIM · $4,24 · 2019	12 V / 1 A	10 mV	—	90 °C	$4.24	Recommended	The compact supply holds its rated output well, with low ripple and overload, short-circuit, and overheat protection. Read review
5 V, 3 W power supply2019	5 V	400 mV	—	50 °C	—	Not recommended	It works and stays reasonably cool, but ripple is high, protection is erratic, and output barely reaches its rating. Read review
48 V 2.5 A power supply100MHz · $4,69 · 2018	48 V / 2.5 A	20 mV	88.8 %	100 °C	$4.69	Recommended	This inexpensive power supply handles the load well, has low ripple, and is recommended by the author. Read review
WX-DC2440$12 · 2018	24 V / 15 A	200 mV	85.5 %	—	$12	With reservations	It performs well up to 240 W but overheats; sustained use calls for modifications and a fan. Read review
24 V 3 A power supply2018	24 V / 3 A	50 mV	86.4 %	85 °C	—	With reservations	The PSU is well built, but its ratings are overstated; the author puts its real continuous power at about 50 W. Read review
HLK-PM12Hi-Link · $2,32 · 2018	12 V / 0.25 A	50 mV	—	55 °C	$2.32	Recommended	The author liked the supply: it was stable, survived an overload, and reached 55 °C at 400 mA. Read review
48 V 8.3 A power supply2018	48 V / 8.3 A	150 mV	—	—	—	With reservations	Ripple meets the specification, but continuous output is only about 200 W; 400 W is available briefly. Read review
Mean Well HDR-100-12NMean Well · 2018	12 V	60 mV	—	100 °C	—	With reservations	Preferred over the HDR-60 for lower ripple and higher power, but an unsoldered capacitor was found. Read review
HDR-60-12Mean Well · 2018	12 V / 4.5 A	100 mV	88 %	—	—	Recommended	Accurate regulation, low heat and effective protection, though the author notes ripple and some design issues. Read review
500 W Switching Power Supply for Audio Amplifiers2018	35 V	—	91.6 %	146 °C	—	With reservations	The power supply is well made and efficient, but overheats; it can deliver only 250–300 W continuously. Read review
EPP-100-12Mean Well · 2018	12 V / 6.3 A	175 mV	—	—	—	Recommended	The PSU sustained up to 7.5 A without cooling, but had short ripple spikes up to 175 mV. Read review
MeanWell SDR-120-24MeanWell · 2018	24 V	—	89 %	81.6 °C	—	Recommended	The PSU passed the tests; the author praised its build and protections but noted that the transformer runs quite hot. Read review
RPS-120-27Mean Well · 2018	27 V / 4.5 A	75 mV	90 %	—	—	With reservations	Well built and handles the load reliably, but it buzzes noticeably, has high ripple, and is difficult to repair. Read review
48 V 1 A power supply2018	48 V / 1 A	40 mV	—	—	—	Recommended	The author liked it: it delivers about 25 W continuously and up to 45–50 W briefly. Read review
3A-064WU12Eng Electric Co., LTD · 2018	12 V / 0.5 A	100 mV	74 %	118 °C	—	Recommended	It holds voltage up to 0.9 A but gets very hot under sustained overload; the author considers it quite good overall. Read review
Raxfly charger (power supply), 5 V with a claimed current of 7.2 ARaxfly · $11 · 2017	5 V / 7.2 A	150 mV	80 %	120 °C	$11	Not recommended	It sustains only about 4.5 A; output current and power fall short of claims, and severe ripple appears after warming up. Read review
12 V 3 A power supply for access control systems2017	12 V / 3 A	10 mV	77 %	132 °C	—	Not recommended	Works reasonably well up to 2 A, but overheats from 2.5 A and is unsuitable for sustained use. Read review
12 V 50 A power supply$27 · 2017	12 V / 50 A	250 mV	88 %	107 °C	$27	With reservations	Delivered 595 W in a one-hour test, but the author considers 450–480 W its continuous rating and notes overstressed components. Read review
S-480-24$22,99 · 2017	24 V / 20 A	—	86.9 %	52 °C	$22.99	With reservations	It handled the full load with decent efficiency, but its build and component quality are poor. Read review
12 V 30 A 360 W power supply2017	12 V	80 mV	83.4 %	—	—	Recommended	Passed all tests, stabilizes voltage well and does not overheat much, but has shortcomings in components and insulation. Read review
S-240-122017	12 V / 20 A	60 mV	84 %	—	—	With reservations	An average Chinese supply: it passed the tests with low ripple, but component choice and build quality raise concerns. Read review
CPS-6011GOPHERT · $151 · 2016	60 V / 11 A	40 mV	—	35 °C	$151	Recommended	An accurate, well-regulated supply with low ripple; the author liked it despite stiff buttons and a noisy fan. Read review
12 V, 1 W power supply$3,89 · 2015	12 V	100 mV	—	—	$3.89	Recommended	This simple PSU delivered three times its rated power while maintaining stable voltage and acceptable ripple. Read review
24 V, 4.8 W power supply$2,72 · 2015	24 V	90 mV	—	—	$2.72	With reservations	It meets its rated specifications but has little power headroom and no fuse. Read review
48 V, 5 A, 240 W power supply2015	48 V / 5 A	50 mV	—	—	—	Recommended	The PSU delivered more than its rated power with low ripple, but needs several modifications. Read review
GOPHERT CPS-3205GOPHERT · 2015	32 V / 5 A	10 mV	—	98 °C	—	Recommended	A well-built lab supply with very low ripple and strong performance, despite a few minor drawbacks. Read review
S-360-36$30,2 · 2015	36 V / 10 A	100 mV	—	—	$30.2	With reservations	It delivers its rated power with good stability and low ripple, but failed under overload. Read review
S-180-122015	12 V / 15 A	650 mV	—	—	—	With reservations	A well-made power supply, but it overheats at maximum load and has high ripple. Read review
24 V, 5 A power supply2015	24 V / 5 A	800 mV	—	70 °C	—	With reservations	It handled up to 6 A and stayed cool, but without modification it has high ripple and output-voltage sag. Read review
24 V, 100 W power supply2015	24 V / 6 A	800 mV	—	78 °C	—	Recommended	The PSU worked steadily at its rated 100 W and handled a test near 120 W, but has safety-related shortcomings. Read review
5 V, 2 A power supply with microUSB plug2015	5 V / 2 A	150 mV	—	62.2 °C	—	With reservations	Works adequately up to about 1.5 A, but voltage sags at higher loads and it can interfere with some touchscreens. Read review
XK-1205DC (12 V version)2015	12 V / 1 A	60 mV	—	—	—	With reservations	The compact supply performed well with low ripple, but its interwinding capacitor should be replaced. Read review
XY1205$7,99 · 2015	12 V / 5 A	600 mV	—	79 °C	$7.99	With reservations	It works, but ripple is high and it is unsuitable for full load; the author recommends limiting the current. Read review

Conclusion — a brief summary of the review’s findings. See the review itself for details and measurement conditions. Prices are as of the review date and may have changed since then. A dash means this value isn’t mentioned in the review; it’s often shown in the specs photo. The scales show how each model compares with the others on this page: green — good, yellow — average, red — poor.

Frequently asked questions

What should you look for when choosing a switching power supply?

Real power in the test, ripple under load, and the temperature of the hottest components: the rated power often says little about the available headroom. The hotter it gets at full load, the less you should count on it running at that power for long.