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  9. 300 watt power supply – The 15 best products in comparison

300 watt power supply – The 15 best products in comparison

300 watt power supply – The 15 best products in comparison

Recommended products in the "300 watt power supply" section

We have products in the range "300 watts Power Supplies" compared with each other and put together recommendations for you. Here you will find the top 15 in the “300 watt power supply” section.

300 watt power supply – the most important things at a glance

A 300 watt power supply provides the essential energy that computer components need for operation. Typically, 300 watt power supplies are ideal for standard office or home PCs that do not require intensive graphics processing or gaming, as such applications typically require higher wattage. When choosing a 300 watt power supply it is important to consider the brand and quality as this affects the reliability and longevity of the product. Watch out for that Efficiency of the power supply, which is characterized by the 80 Plus certificate, since higher efficiency leads to less power wastage and therefore lower operating costs. Despite the shared 300 watts, the products differ in aspects such as size, noise level and number of connections. It is therefore crucial to consider these factors based on the unique needs of your PC setup.

The bestsellers in the "300 watt power supply" segment

A list of the best sellers under the category "300 watt power supply" you can find here. Here you can find out which products other users have bought particularly often.

Bestseller no. 1
Lenovo 5A10W86289 Original Power Supply 300 Watt for Legion 5-15IAH7H, 15ACH6A, 15ACH6H, 15ITH6H, 15ITH6H, 16ACH6H, 17ACH6H, 17ITH6H
  • Colour: black, scope of delivery: including mains cable (3-pin cable C13), dimensions (length/width/height): 198 mm / 100 mm / 26 mm, voltage: 20 volts, current: 15 amps, output power: 300 Watt, input voltage: 100-240V / 50-60Hz, energy efficiency: VI
  • Connector type: Slim Tip Connector shape: 180° straight Connector outer diameter: 11,0 mm Connector inner diameter: 3,0 mm Connector length: 11,5 mm Pin in connector: Yes Length of the connecting cable from the power supply to the Notebook: about 1,70 m
  • This charger fits the following models, among others: Lenovo Legion 5-15IAH7H, 5-15ACH6A, 5-15ACH6H, 5-15ITH6H, 5-15ITH6H, 5-16ACH6H, 5-17ACH6H, 5-17ITH6H
  • Further spare part numbers: 5A11H02887
Bestseller no. 2
DUSKTEC LED transformer 24 V 300 W LED transformer IP67, waterproof power supply LED driver AC 230 V to DC 24 volts 12,5 A, constant voltage low-voltage transformer for indoor or outdoor LED strips Strip CCTV lamps
  • 【Parameters】AC input 180-260 volts. 50 / 60Hz, constant voltage output: 24Vdc, output current: 12,5 amps. Maximum load: 300 watts. Dimensions: 365*58*25mm; Not dimmable.
  • 【Features】 Full-body aluminum case coupled with silicone compound filled inside helps keep the device 100% waterproof and cool. No radio interference, no minimum load, no flickering and no noise.
  • 【Protection】IP67 rated rainproof and dustproof. For 24Vdc low voltage LED lights. Reliable internal circuitry provides over-voltage, over-heat, over-current, and short-circuit protection features.
  • 【Note】The combined wattage of the connected LED lights must not exceed 300 watts. In order to extend the lifespan, it is common practice to keep the load within 85% of the capacity of the LED power supply.
  • 【Warranty】 Can be installed in dry or wet place, suitable for indoor and outdoor use. 2 year guarantee. If you have any problems with the product, please feel free to contact us for support.
Bestseller no. 3
be quiet! TFX Power 3 300W Bronze, 80 Plus Bronze, temperature controlled fan 80mm fan, strong 12V line to support PCIe graphics cards, PCI Express connector for GPU support, BN322
  • The 80 PLUS Bronze certification with an efficiency of up to 88,3% is convincing proof of the efficient and energy-saving operation of this power supply.
  • A PCIe adapter is included for peripheral devices such as a graphics card with high power requirements. This makes the TFX Power 3 300W Bronze the ideal power supply for anyone looking for enough power for a compact system with quiet operation.
  • The temperature-controlled fan ensures quiet operation and low heat loss. Because TFX Power 3 300W Bronze meets the latest safety standards, it protects the PC against overcurrent, over- and undervoltage as well as short circuit and overload.
Bestseller no. 4
AKYGA AK-S1-300 SFX power supply for PC 300W PPFC P4 2X SATA 2X Molex 12cm fan
  • High quality and competitive price
  • 80 mm fan
  • OVP/OCP/OPP/OTP/SCP/UVP - fuse
Bestseller no. 5
REYLAX LED transformer 24V 300W power supply, LED driver DC switching power supply 230V to 24V 12.5A, constant voltage transformer, low-voltage transformer adapter for LED light strips, lamp lighting
  • Well-made and stable output - The driver unit provides a constant voltage for the LED drivers, AC 170-260V input, 24V DC, 50/60 Hz, not dimmable. Compact designed for DIY LED strips in a limited space.
  • Good Cooling and Robust Frame - The slim aluminum honeycomb design keeps electronic components cool and ensures good heat dissipation. There is no interference, no minimum load, no flickering and no noise.
  • Works Perfectly - Since the transformer provides automatic protection against short circuit, overvoltage, overcurrent and overtemperature, an adapter with a high load capacity supports the lighting with a small power consumption.
  • Easy to Install - Live terminal cover that opens and closes without cumbersome screws, ready to use.
  • Ideal electronic transformer for most applications. For example, change older halogen to LED, save electricity. At the protection class IP20, LED power supply can be used in dry environments.
  • Trusted Brand Guarantee - Experience outstanding customer service with our dedicated 24/7 support. Rest easy with our extended warranty and take advantage of Amazon's 30-day free returns.
  • IMPORTANT NOTES - To maximize efficiency and performance, ensure the load does not exceed 80% of the transformer's maximum capacity.
  • COMPATIBILITY - Please note that our LED driver 24V is specifically designed for constant voltage operation. It is not compatible with dimmable LED lights or LED strips with a color changing function. Use with such products may cause overuse.
Bestseller no. 6
SilverStone SST-ST30SF v 2.0 - SFX Series, 300W 80 Plus Bronze Whisper Quiet PC Power Supply with 92mm Fan
  • Fits SFX standard and ATX form factor (via included adapter)
  • 300W continuous output power at 40°C operating temperature, designed for continuous operation 
  • 80 PLUS Bronze efficiency (82 to 85% efficiency at 20 to 100% load)
  • Premium single +12V rail
  • Low-noise operation thanks to 92 mm fan (V2.0)
Bestseller no. 7
DUSKTEC LED power supply 300W 12V LED transformer 25A, IP20 LED transformer AC 220/230V to DC 12 volt driver, constant voltage low-voltage transformer for LED bulbs, light strips, lamps, displays, CCTV
  • 【Parameters】AC input 170-260 volts. 50 / 60Hz, constant voltage DC output: 12V, output current: 25 amps. Maximum load: 300 watts. Dimensions: 215*63*30mm; Not dimmable.
  • 【Features】The ultra-slim honeycomb style is scientifically designed for heat dissipation and helps the electronic components run cool. No radio interference, no minimum load, no flickering and no noise (fanless).
  • 【 IP20 rated】For 12 volt low voltage LED lights. Reliable internal circuitry provides over-voltage, over-heat, over-current, and short-circuit protection.
  • 【Note】The combined wattage of the connected LED lights must not exceed 300 watts. It is a common practice to keep the load within 85% of the LED power supply's capacity to extend its lifespan.
  • 【Warranty】Can be installed in a ventilated and dry place or wall mounted. 2 year guarantee. If you have any problems with the product, please do not hesitate to contact us for help.
Bestseller no. 8
5V 60A power supply 230V to DC 5V 300W voltage converter Universal switching power supply transformer for LED strips
  • Switching power supply, convert AC 110V/220V to DC 5V 60A 300W.
  • Dual input voltage: AC 100-240V. Output voltage: DC5V
  • Protection: short circuit protection, overload protection, over voltage protection
  • Safety compliance CE and RoHS, a reliable switching power supply with high quality material, durable and safe to use.
  • Wide input voltage range, stable and precise output voltage. 5V transformers are widely used for electronic devices, LED lighting, LED display, etc.
Bestseller no. 9
DUSKTEC LED power supply 300W 24V LED transformer 12.5A, IP20 LED transformer AC 220/230V to DC 24 volt driver, constant voltage low-voltage transformer for LED bulbs, light strips, lamps, displays, CCTV
  • 【Parameters】AC input 170-260 volts. 50 / 60Hz, constant voltage DC output: 24V, output current: 12,5 amps. Maximum load: 300 watts. Dimensions: 215*63*30mm; Not dimmable.
  • 【Features】The ultra-slim honeycomb style is scientifically designed for heat dissipation and helps the electronic components run cool. No radio interference, no minimum load, no flickering and no noise (fanless).
  • 【 IP20 rated】For 24 volt low voltage LED lights. Reliable internal circuitry provides over-voltage, over-heat, over-current, and short-circuit protection.
  • 【Note】The combined wattage of the connected LED lights must not exceed 300 watts. It is a common practice to keep the load within 85% of the LED power supply's capacity to extend its lifespan.
  • 【Warranty】Can be installed in a ventilated and dry place or wall mounted. 2 year guarantee. If you have any problems with the product, please do not hesitate to contact us for help.
Bestseller no. 10
300W 20V 15A AC Charger Fit for Lenovo ThinkPad R9000P R9000K Y9000K Y9000X R7000P 9000P 9000K ADL300SDC3A SA10R16956 5A10W86289 Laptop Power Supply Adapter Cable
  • Specifications: Input: 100-240V 50-60Hz. Output voltage: 20V. Output current: 15A. Power: 300W. Plug: Yellow square tip.
  • Compatible with Lenovo ThinkPad R9000P R9000K Y9000K Y9000X R7000P 9000P 9000K
  • Compatible with P/N: ADL300SDC3A SA10R16956 5A10W86289
  • Security: High quality standard materials. V-0 Class Flame Retardant, OVP, OCP, SCP Protection (OVP: Over Voltage Output Protection. OCP: Over Current Output Protection. SCP: Short Circuit Output Protection), 100 percent test before delivery.
  • Warranty: 30 days money back guarantee, 1 year warranty. If you are not 100% satisfied with this charger, do not hesitate to contact us and we provide 7*24 hours email customer service 🙂
Bestseller no. 11
15M PREMIUM 24V RGB+WW RGBW LED strip LED strip LED strip 5050 SMD RGB+warm white LED light bar 900LEDs 60LED's/M+controll with RF TOUCH remote control +24v 12.5A 300W power supply ULTRA SLIM TRAFO
  • Colour: LED strips RGB+WW (RGB+warm white), full colour; RGB+WW / RGB with WW (warm white) stripes !
  • 24V super bright SMD LED as light source (IP20) led strip 5m 300LED with ULTRA SLIM TRANSFORMER
  • 15m (3x5m roll), 10mm wide - can connect 10m in one line (serial way)
  • led strip rgbw - Long life, light source can last more than 50.000 hours.
  • Low Voltage (24V only)
Bestseller no. 12
DUSKTEC LED transformer 12 V 300 W transformer IP67, waterproof LED power supply driver AC 230 V to DC 12 volts 25 A, constant voltage low-voltage transformer driver for outdoor LED strips, spots, light bulbs, ceiling lamps
  • 【Transformer 230V to 12V LED】AC input 170-260 volts. 50 / 60Hz, constant voltage output: 12V DC, output current: 25 amps. Maximum load: 300 watts. Dimensions: 365 x 58 x 25mm; Not dimmable.
  • 【LED Transformer 12V No Minimum Load】The full-body aluminum case combined with silicone compound filled inside helps keep the device 100% waterproof and cool. No radio interference, no minimum load, no flickering and no noise.
  • 【LED Transformer 12V Waterproof】IP67 rated rainproof and dustproof. For CCTV cameras and DC12V LED lighting such as single color LED strips, under cabinet lights, LED modules, puck lights, pool lights, landscape lights, deck lights, shop signs and G4/MR16/MR11 LED bulbs.
  • 【LED Transformer 12V】The combined wattage of the connected LED lights must not exceed 300 watts. In order to extend the lifespan, it is common practice to keep the load within 85% of the capacity of the LED power supply.
  • 【Warranty】Can be installed in dry or wet place, suitable for indoor and outdoor use. 2 year guarantee. Any problem with the LED power adapter 12V 300W, please feel free to contact us for support.
Bestseller no. 13
REYLAX LED power supply 24V 300W 12.5A, waterproof IP67 LED transformer, outdoor transformer 230V to 24V LED, constant voltage switching power supply transformer, LED driver transformer for LED strip lamps lighting
  • IP67 waterproof constant voltage LED power supply, input AC 180-260V, output DC 24V, maximum power: 300 watts, not dimmable. Compact size, suitable for installation in small spaces.
  • Electronic LED transformer, 230V to dc 24V transformer, aluminum housing, no minimum load, no LED flickering, quiet without buzzing.
  • Easy to install, with waterproof, anti-moisture and anti-dust function, low calorific static power consumption, suitable for indoor, outdoor and wet room. Support with 24v stair step lights, cabinet lights, strip lights, G4, GU5.3, MR11, MR16, LED strip lights or other 24v low voltage led lights.
  • Advanced circuit boards and electronic components provide with perfect over-current, over-voltage, short-circuit, over-temperature and over-voltage protection. 2 YEAR WARRANTY, if you have any problem with the product, please contact us for support.
  • Tips: Do not use this current for devices with inductive load (cold cranking current of them is very large, which can easily overload the power supply), e.g. B. Halogen lamps, fluorescent lamps, relays, electric motors, compressors, etc. Keep the load within 80% of the LED power supply to extend the service life.
Bestseller no. 14
Alinana LED transformer 24V 300W, IP67 waterproof transformer 230v to 24v, 24v power supply 300w for LED strip lamps, outdoor surveillance camera, 24Vdc 0-12,5A
  • 【Working range】AC 175-264V 50/60Hz. The LED power supply with DC24V is designed for LED strip lights. Transformer 230v to 24v provides a constant voltage output without dimming function.
  • 【High quality】Our 24v LED power supply 300w goes through a 100% high-temperature aging process and the LED transformer 24v 300w has an active EMI function as well as protection functions against short circuit, overvoltage, overload and overheating.
  • 【Protection level】 Our 24V LED power supply with an output of 300W has a protection level of IP67 and an aluminum housing. air cooling through natural convection.
  • 【Multipurpose】Our LED transformer 24V 300W is suitable for a variety of applications, including LED strip lights, outdoor lights, advertising signs, surveillance cameras and more.
  • 【After sale】Our 24v LED power supply 300w comes with a 3 year warranty. If you have any questions about operation or maintenance, we will be happy to help you. Thank you for your support.
Bestseller no. 15
LED transformer 24V 300W DC power supply outdoor IP67 waterproof transformer for LED strips
  • 24V 300W LED Transformer: Input: AC 170-250V, 50/60 Hz, Output: 24V, 12.5A, 300W. Constant voltage output to ensure power supply stability. It is recommended that the load be maintained at no more than 85% of its maximum capacity to allow for current fluctuations. The IP67 waterproof power supply is suitable for outdoor and indoor use.
  • High Quality Material: Made of aluminum body and high quality components, sturdy and durable, protect against rainwater. With a black wire at the AC input on one end and two black wires at the DC output on the other end.
  • Multiple protections: over-voltage protection, overload protection and short-circuit protection. Full load high temperature burn-in, aging test, quality guaranteed.
  • Easy to Install: LED driver with humanized hole blank design to fix screw hole for quick installation.
  • Widely Used: The power supply is suitable for LED strip light, LED light bulb, outdoor billboard, lighting project, wall wash lamp, underground lamp and all 24V DC LED lights.
Bestseller no. 16
30M 24V RGB+NW RGBW LED strips LED strip LED strip 5050 SMD RGB+cold white light bar 1800LEDs 60LED's/M+controll with RF TOUCH remote control +2pcs. 24v 12.5A 300W power supply TRANSFORMER
  • Colour: LED strips RGB+NW (RGB+cool white) , full colour; RGB+NW / RGB with NW (cold white) stripes !
  • 24V super bright SMD LED as light source (IP20) led strip 5m 300LED with ULTRA SLIM TRANSFORMER
  • 30m (6x5m roll), 10mm wide - can connect 10m in one line (serial way)
  • led strip rgbw - Long life, light source can last more than 50.000 hours.
  • Low Voltage (24V only)
Bestseller no. 17
Alinana LED transformer 12v 300W, IP67 waterproof transformer 230v to 12v, 12v power supply 300w for LED strip lamps, outdoor surveillance camera, 12vdc 0-25A
  • 【Working range】AC 175-264V 50/60Hz. The LED power supply with DC12V is designed for LED strip lights. Transformer 230v to 12v provides a constant voltage output without dimming function.
  • 【High quality】Our 12v LED power supply 300w goes through a 100% high-temperature aging process and the LED transformer 12v 300w has an active EMI function as well as protection functions against short circuit, overvoltage, overload and overheating.
  • 【Protection level】 Our 12V LED power supply with an output of 300W has a protection level of IP67 and an aluminum housing. air cooling through natural convection.
  • 【Multipurpose】Our LED transformer 12V 300W is suitable for a variety of applications, including LED strip lights, outdoor lights, advertising signs, surveillance cameras and more.
  • 【After sale】Our 12v LED power supply 300w comes with a 3 year warranty. If you have any questions about operation or maintenance, we will be happy to help you. Thank you for your support.
Bestseller no. 18
CPROSP LED power supply 24V 300W 12,5a, IP67 waterproof, LED transformer, 230v to 24v dc transformer, LED power 24v, LED strip transformer 24v, LxWxH 258 x 75 x 43 mm
  • 🦄【IP67】 Due to the protection class IP67, it is suitable for use in dry, damp or wet areas.
  • 🦄【Hazardous Protection】 It is protected against short circuit, overload and over voltage, suitable for applications such as LED strip light, LED lighting, LED decorative lighting and LED architectural lighting.
  • 🦄【Longer Lifespan】LED lights already last much longer than normal incandescent, energy-saving and halogen lamps, but together with this LED transformer, the lifespan is even longer. Use this LED driver 24V together with all your 24V LED lighting and experience how nice it is that you no longer have to take care of your lighting and how nice it is that LED bulbs consume much less energy than all other lamp types.
  • 🦄【LED Transformer Parameters】Driver AC 230V to DC24V; Maximum power: 300 watts; Maximum output current: 12,5A PWM controlled (Pulse Width Modulation); Material: aluminum body. Do not use this power supply for devices with an inductive load (because of the high starting power that can easily overload the power supply), e.g. B. fluorescent lamps, halogen lamps, motors, compressors, relays, etc.
  • 🦄【Suitable for】 Perfectly used as control gear for LED strips. Application examples are conservatories, facade lighting, railing and bridge lighting, etc.
  • 🦄【Perfect After-Sales Service】: If you have any questions when using the product, please feel free to contact us directly via email and we will solve your problems.
Bestseller no. 19
Inter-Tech 88882144 Power Supply PSU Argus TFX-300W
  • Power class: 300W to 399W
  • INTER-TECH TFX-300W FUENTE DE ALIMENTACIÓN 20+4 PIN ATX
  • INTER-TECH TFX-300W FUENTE DE ALIMENTACIÓN 20+4 PIN ATX
  • INTER-TECH TFX-300W FUENTE DE ALIMENTACIÓN 20+4 PIN ATX
  • INTER-TECH TFX-300W FUENTE DE ALIMENTACIÓN 20+4 PIN ATX
Bestseller no. 20
Ankermann Business Work V2 PC | AMD Ryzen 5 5600G | AMD Vega7 Graphics | 16GB RAM | 1TB M.2 SSD | Windows 11 | 300W power supply | WiFi | LibreOffice
  • EAN 4260561746731 - Our V2 PC has a fast AMD Ryzen 5 5600G 6 x 3.90 GHz processor with 16GB of branded RAM on an ASUS motherboard. Benefit from the combined power of a fast CPU and fast RAM!
  • The PC is equipped with a lightning-fast 1TB M.2 NVMe SSD and can be easily expanded with 2 free SATA 6GB/s ports.
  • An AMD Radeon Vega 7 graphics unit with VGA / HDMI ports is installed in the PC. A card reader reads and writes all your cards, and there is also a DVD burner. The whole thing is in our best-selling case and is equipped with the super-silent 300W power supply.
  • For your best user experience, our Ankermann PC is equipped with Windows 11 and a WLAN card to get started immediately, without bloatware and software trial versions. Windows and all drivers are installed and updated. Includes LibreOffice 7 with Writer / Calc / Impress / Draw / Base / Math.
  • Ankermann's service offers you many years of experience with the production, sales and quality assurance of PCs in Germany and a 24-month guarantee on our hardware. 6 months return service in the event of a warranty claim and fast and friendly customer support are a given.

This is what Stiftung Warentest says about products in the “300 watt power supply” area

Stiftung Warentest examines, compares and tests the best products for consumers. Many of the tests by Stiftung Warentest help in deciding which product to buy. We do not currently know whether there is a test winner from Stiftung Warentest for this product that is recommended for purchase.

Our comparison winner in the area "300 watt power supply"

Compare winner
Lenovo 5A10W86289 Original Power Supply 300 Watt for Legion 5-15IAH7H, 15ACH6A, 15ACH6H, 15ITH6H, 15ITH6H, 16ACH6H, 17ACH6H, 17ITH6H
  • Colour: black, scope of delivery: including mains cable (3-pin cable C13), dimensions (length/width/height): 198 mm / 100 mm / 26 mm, voltage: 20 volts, current: 15 amps, output power: 300 Watt, input voltage: 100-240V / 50-60Hz, energy efficiency: VI
  • Connector type: Slim Tip Connector shape: 180° straight Connector outer diameter: 11,0 mm Connector inner diameter: 3,0 mm Connector length: 11,5 mm Pin in connector: Yes Length of the connecting cable from the power supply to the Notebook: about 1,70 m
  • This charger fits the following models, among others: Lenovo Legion 5-15IAH7H, 5-15ACH6A, 5-15ACH6H, 5-15ITH6H, 5-15ITH6H, 5-16ACH6H, 5-17ACH6H, 5-17ITH6H
  • Further spare part numbers: 5A11H02887

Current offers in the area "300 watt power supply"

You want the best products in the range "300 watt power supply" buy? In this bestseller list you will find new offers every day. Here you will find a large selection of current products in the "300 watt power supply" category.

Bestseller no. 1
300W 20V 15A AC Charger Fit for Lenovo ThinkPad R9000P R9000K Y9000K Y9000X R7000P 9000P 9000K ADL300SDC3A SA10R16956 5A10W86289 Laptop Power Supply Adapter Cable
300W 20V 15A AC Charger Fit for Lenovo ThinkPad R9000P R9000K Y9000K Y9000X R7000P 9000P 9000K ADL300SDC3A SA10R16956 5A10W86289 Laptop Power Supply Adapter Cable
Compatible with Lenovo ThinkPad R9000P R9000K Y9000K Y9000X R7000P 9000P 9000K; Compatible with P/N: ADL300SDC3A SA10R16956 5A10W86289
92,99 EUR −5% 87,99 EUR Amazon Prime

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