If you’re looking for a powerful graphics card like the RTX 3090, you need to pair it with a reliable power supply unit (PSU) that can handle the high power demands. But with so many options available, it can be overwhelming to choose the best PSU for your system.
Before buying a PSU, there are several factors you need to consider. First, check the wattage required to power your entire system, including the GPU, CPU, and other components. The RTX 3090 alone requires at least a 750W PSU, so it's good to have some headroom. Second, look for PSUs with high efficiency ratings, such as 80+ Gold or 80+ Platinum, to minimize wasted energy and lower your electricity bills. Finally, consider the PSU's size and cable length to ensure it fits properly in your case and can reach all your components.
Are you tired of PSUs that fail after a few months? Do you want to protect your high-end components from power fluctuations and surges? Choosing the best PSU for the RTX 3090 can make all the difference in the performance and lifespan of your system. If you're a gamer, content creator, or professional user, investing in a quality PSU is a must. Keep reading to find out which PSUs are recommended by industry experts, and discover the benefits of getting a modular PSU that allows you to customize your cable management.
10 Best Psu For Rtx 3090
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This product is ideal for powering high-performance computer systems with its high wattage, efficiency, and fully modular design.
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2
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Ideal for high-performance computer builds requiring a fully modular and reliable power supply with a long warranty.
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3
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Ideal for high-end gaming PCs and mining rigs with multiple GPUs, providing reliable and efficient power delivery.
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4
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Ideal for powering high-end gaming PCs with NVIDIA RTX 20/30/40 series and AMD graphics cards, offering full modularity and 80 Plus Gold certification.
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5
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Ideal for high-end gaming PCs and workstations that require a reliable, high-wattage power supply with modular cabling and energy efficiency.
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6
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Ideal for powering high-performance computer systems with maximum efficiency and minimal noise.
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7
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Ideal for high-end computer builds requiring a powerful and efficient fully modular power supply.
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8
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This product is ideal for those in need of a highly-efficient, low-noise power supply with modern standby support and high-capacity components.
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9
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Ideal for high-performance gaming PCs with NV RTX and ATI RX graphics cards, providing 850W power support.
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10
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Ideal for high-end gaming PCs and workstations with demanding systems requiring a reliable, efficient, and fully modular power supply.
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1. Evga Supernova 1000 G+: Efficient, Reliable Power.

The EVGA 1000 G+ power supply offers unrivaled performance and value, making it the new gold standard in the industry. Certified 80 PLUS Gold, this power supply boasts an efficiency rating of 90% (115VAC) or 92% (220VAC~240VAC) under typical loads, ensuring that your system will operate at maximum efficiency.
Featuring a 135mm fluid dynamic bearing fan size, the EVGA 1000 G+ power supply is designed to keep your system running smoothly and quietly. With heavy-duty protections such as OVP, UVP, OCP, OPP, SCP, and OTP, this power supply is built to withstand even the most demanding environments.
With a 10-year warranty, the EVGA 1000 G+ power supply is a reliable and safe choice for any system builder. Whether you're a professional or a serious gamer, this power supply is sure to deliver the power and performance you need to take your system to the next level.
2. Gold Standard Power Supply With Self-Tester

This power supply unit has been awarded the prestigious 80 PLUS Gold certification, meaning it boasts an impressive 90% efficiency or higher under typical loads. Its fully modular design allows for a reduction in clutter and an improvement in airflow, optimizing the performance of your system.
Featuring 100% Japanese capacitors and a DC-DC converter design, this power supply unit is designed to improve the stability of the 3.3V and 5V rails. With a fluid dynamic bearing fan and EVGA ECO Mode, this unit operates ultra-quietly, making it perfect for those who value peace and quiet. Additionally, these features also increase the lifespan of the unit.
This power supply unit is designed to operate in temperatures ranging from 0° to 50° C, making it ideal for use in a variety of settings. Whether you're a gamer, a graphic designer, or simply looking for a power supply unit that can handle high-performance tasks, this unit has the power and efficiency you need. Its sturdy construction and top-of-the-line components ensure that it will provide reliable power for years to come.
3. Supernova Gold 1600w: Ultimate Power Solution

The power supply unit is highly efficient, boasting an 80 PLUS Gold certification and providing 90% or greater efficiency under typical loads. It has been expertly designed to minimize cable clutter and improve airflow, thanks to its fully modular construction.
The unit is built with 100% Japanese capacitors and features a DC-DC converter design that enhances the stability of the 3.3V and 5V rails. Additionally, it is equipped with a double ball bearing fan and EVGA ECO Mode, ensuring ultra-quiet operation and a longer lifespan.
For optimal performance, it is strongly recommended that customers use the cables that come with the product. The use of third-party cables may cause issues with powering on.
4. Gold Standard Gaming Power: 850w Full Modular Psu

Introducing the ATX 3.0 and PCIe 5.0 ready power supply, designed to provide stability and security for your computer system. With the ability to hold up to 200% total power excursion and 300% GPU power excursion, this power supply is more reliable and secure than traditional ATX 2.0 power supplies.
The 850 Watt Power Supply 80 Plus Gold certification ensures ultra-high power efficiency of 91.8% at typical load, which reduces heat in your computer's system and prolongs its life. You can now enjoy a more energy-efficient system without compromising its performance.
The fully modular power supply is designed to provide a better cable management system and improve airflow by allowing you to use only the cables you need. This feature reduces system clutter and strengthens your cable management.
The Native 12VHPWR Cable is capable of generating up to 600W of power for PCIe 5.0 graphics cards. Its DC-DC structure, Full Bridge LLC resonance assist, and 12V synchronous rectification provide stable and safe output, ensuring the longevity of your system.
This power supply is designed to support all graphics cards, with 2x PCIE 4.0 ports that support NVIDIA RTX 20/30 Series and AMD graphics cards, 1x PCIE 5.0 port that supports NVIDIA 4090/4080/4070Ti graphics cards. You can now enjoy a smooth and seamless experience with any graphics card you choose.
Upgrade your computer system with this powerful and efficient power supply, designed to provide stability, efficiency, and performance. Get ready to experience a more reliable and secure system with the ATX 3.0 and PCIe 5.0 ready power supply.
5. Evga T2 Power: Ultimate Energy For Gaming.

The EVGA 1600 T2 power supply unit is the ultimate solution for high-end computer systems. With an impressive MTBF of 100,000 hours, this power supply unit is designed to provide reliable and consistent power to your components.
This power supply unit is 80 PLUS Titanium certified, boasting an impressive 94% (115VAC) / 96% (220VAC~240VAC) efficiency or higher under typical loads. This means that less energy is wasted as heat, and more power is delivered to your components, resulting in a more stable and efficient system.
The EVGA 1600 T2 features a 140mm double ball bearing fan, which ensures optimal cooling and quiet operation even under heavy loads. The fan is designed to operate efficiently, ensuring that your system remains cool and stable at all times.
This power supply unit also comes with a range of heavy-duty protections, including OVP (Over Voltage Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), and OTP (Over Temperature Protection). These protections safeguard your system from any harm, ensuring that your components are safe and secure.
6. Corsair Rmx Series (2021), Rm1000x, 1000 Watt, Gold, Fully Modular Power Supply,black

Introducing the fully modular power supply unit that offers unparalleled performance and reliability – the 135mm ML fan power supply from a trusted brand. This power supply unit is designed to be the perfect match for modern graphics cards and motherboards, thanks to its EPS12V connector.
One of the standout features of this power supply is its fully modular design. This means that you only need to connect the cables that your system requires, resulting in a tidier and more efficient setup.
The power supply also boasts a 135mm ML fan that utilizes magnetic levitation bearing and custom-engineered rotors. This combination ensures high-performance cooling, low noise, and superior reliability even during prolonged use.
Additionally, the 100% industrial-grade, 105°C rated Japanese capacitors guarantee unwavering power and reliability, so you can be confident that your system is receiving the power it needs to operate at its full potential.
Finally, the power supply supports Modern Standby sleep mode, which leads to extremely fast wake-from-sleep times and better low-load efficiency. This feature is especially useful for users who frequently put their system to sleep or idle.
Invest in the 135mm ML fan power supply for a reliable, efficient, and high-performance power source that will keep your system running smoothly and efficiently.
7. Platinum Power: Corsair Hx1200

The power supply unit under review boasts of an impressive 80 Plus Platinum rating, indicating its superior energy efficiency and the ability to run cooler than less efficient power supplies. This feature is especially valuable for high-powered systems that require more energy to function optimally.
One of the standout features of this unit is its full modularity, allowing users to only use the cables they need for a cleaner build with better airflow. This feature not only enhances the unit's overall aesthetics but also enables users to optimize their system's cooling capabilities.
The unit also comes with a 10-year warranty, which is a testament to the manufacturer's confidence in its product and is backed by Corsair's legendary technical support and customer service. This feature ensures that users have peace of mind knowing that they can count on the manufacturer's support should anything go wrong with the unit.
The 135mm Fluid Dynamic Bearing (FDB) fan with Zero RPM mode is another notable feature of this power supply unit. This fan ensures virtually silent operation at low loads, making it ideal for users who value a quiet computing environment. Additionally, the unit comes with eight PATA connectors, providing ample connectivity options for various system components.
The Plus12V Rail Switch is a feature that gives users the flexibility to choose between a single Plus12V rail or multiple Plus12V rails. This feature is especially useful for advanced users who need to optimize their system's power delivery to specific components.
8. Corsair Power – Modular, Low-Noise & Efficient.

Introducing the Fully Modular PSU, a reliable and efficient low-noise power supply that is perfect for building your dream system. With its fully modular cabling system, you can easily connect the cables that your system needs, eliminating unnecessary clutter and making cable management a breeze.
This power supply is Intel ATX 3.0 Certified, which means it is compliant with the latest ATX 3.0 power standard. It supports the PCIe Gen 5 platform and is designed to resist transient power spikes, ensuring that your system receives a steady and reliable power supply.
The Fully Modular PSU is designed to keep your system running quietly. It features a 120mm rifle bearing fan with a specially calculated fan curve that keeps fan noise down, even when operating at full load. You can enjoy a peaceful and quiet computing experience without compromising on performance.
This power supply is equipped with 105°C-rated capacitors, which deliver steady, reliable power and dependable electrical performance. You can rest assured that your system is receiving a stable and safe power supply that won't let you down.
The Fully Modular PSU is also Modern Standby Compatible, which means it offers extremely fast wake-from-sleep times and better low-load efficiency. You can enjoy a seamless computing experience with lightning-fast wake-up times and improved efficiency.
9. Apexgaming's 850w Gaming Powerhouse

Looking for a power supply that offers efficient and stable power output for your high-end gaming system? Look no further than this advanced gaming power supply that supports the latest 2020 RTX GPU and PCI-E SLI CROSS-FIRE modular cable sets.
This power supply is 80+ GOLD certified, which means it is ultra-efficient and delivers stable power output to even the most demanding gaming configurations. The IC design ensures that your system stays stable even during intense gaming sessions.
One of the standout features of this power supply is its fully modular design. The clean, non-reflective black modular cable management system makes it easy to install and customize your cables to fit your specific needs. This is perfect for gamers who want to create a clean and organized gaming setup.
And let's not forget about the superb cooling system. The 140mm ultra-silent anti-dusk anti-vibrating fan keeps your system cool and running smoothly, even during extended gaming sessions. This means you can focus on gaming without worrying about overheating or system crashes.
10. Platinum Power: Seasonic Prime 1300

The power supply being offered boasts of an electrical performance that is both impressive and stable. With a micro tolerance load regulation of 0.5%, it is an ideal choice for high-performance systems that require precision and reliability.
One of the notable features of this power supply is its full modularity, allowing the user to use only the necessary cables to reduce clutter and improve airflow. This results in a better ventilated system that can run more efficiently and effectively.
Equipped with a high 80 PLUS Platinum rating, this power supply is 90% efficient at 20% load, 92% efficient at 50% load, and 89% efficient at 100% load. This ensures that the power supply runs with minimal waste, reducing energy consumption and saving the user money in the long run.
In addition, this power supply comes with a premium hybrid fan control that enables users to keep the overall fan noise at the lowest possible level. This state-of-the-art fan control system ensures that the system runs quietly and smoothly without compromising on performance.
The manufacturer stands behind the quality of this product by offering a 12-year warranty. This is a testament to the superior quality of the power supply and the confidence that the manufacturer has in the product.
Best Psu For Rtx 3090 FAQs
Are modular PSUs better for the RTX 3090?
Modular power supply units (PSUs) offer the advantage of customizable cables, which can help with cable management and airflow in a PC build. However, when it comes to the RTX 3090 graphics card, which is a power-hungry component, modular PSUs may not necessarily be better.
The RTX 3090 requires a high wattage PSU for stable and optimal performance. A modular PSU may offer the convenience of cable management, but it may not provide the same level of power delivery and efficiency as a non-modular PSU. A non-modular PSU typically has better internal wiring which can provide more stable power delivery, whereas modular PSUs may have additional connectors and cables that can cause voltage drops, which can negatively affect performance.
It should be noted that the quality of the PSU is more important than whether it is modular or non-modular. A high-quality, non-modular PSU can provide better power efficiency and stability than a low-quality modular PSU. Therefore, it is important to choose a PSU that is rated for the RTX 3090 and has high efficiency, good voltage regulation, and a strong 12V rail.
Can a 750W PSU handle the RTX 3090?
The RTX 3090 is a high-end graphics card that requires a lot of power to run effectively. It has a TDP of 350W, which means that it requires a power supply unit (PSU) that can deliver at least that much power to run it. A 750W PSU is capable of delivering enough power to run the RTX 3090, but it may not be enough if you have a high-end processor, multiple hard drives, and other components that consume power.
It is recommended to have at least an 850W PSU to ensure that your system has enough power to run the RTX 3090 without any issues. This will also provide headroom for any future upgrades or additions to your system. It's important to note that not all PSUs are created equal, and you should choose a high-quality PSU from a reputable brand to ensure that it can deliver stable and reliable power to your system.
Do I need a specific brand of PSU for the RTX 3090?
The RTX 3090 is a powerful graphics card that requires a significant amount of power to function properly. Therefore, it is essential to have a quality power supply unit (PSU) that can provide enough power for the card to operate optimally. However, there is no specific brand of PSU that is required for the RTX 3090.
The recommended power supply for the RTX 3090 is 750 watts, but some manufacturers may suggest a higher wattage, depending on the specific model and the rest of the system's components. It's important to choose a reliable and efficient PSU from a reputable manufacturer. It's also necessary to ensure that the PSU has the required power connectors for the RTX 3090.
Some recommended brands for PSUs are Seasonic, EVGA, Corsair, and Thermaltake. However, it's always best to research and compare different PSUs' specifications and read reviews before making a purchase decision to ensure that you get the best PSU suitable for the RTX 3090 and your specific needs.
How important is the efficiency rating of a PSU for the RTX 3090?
The efficiency rating of a PSU (Power Supply Unit) is an important factor to consider when building a PC with an RTX 3090 graphics card. The RTX 3090 is a high-end graphics card that requires a considerable amount of power to function properly. Therefore, it is essential to have a PSU that is capable of providing a stable and reliable power supply to the graphics card.
The efficiency rating of a PSU refers to the percentage of power that is converted into usable energy, while the rest is lost as heat. A PSU with a higher efficiency rating will waste less energy, generate less heat, and generally last longer than a lower-rated PSU.
Ideally, a PSU with a minimum of 80 Plus Gold efficiency rating should be used for an RTX 3090 graphics card. This ensures that the PSU can handle the power requirements of the graphics card without any issues. However, it is always recommended to check the manufacturer's specifications for the RTX 3090 and choose a PSU accordingly. A high-quality PSU with a good efficiency rating will not only ensure a stable power supply but also protect your PC components from damage due to power fluctuations.
How many PCIe power connectors does the RTX 3090 need from the PSU?
The RTX 3090 graphics card requires a significant amount of power to operate, and it relies on the PCIe power connectors from the power supply unit (PSU) to provide that power. Specifically, the RTX 3090 requires two 8-pin PCIe power connectors to function properly.
It's essential to ensure that your PSU has these power connectors available before purchasing the RTX 3090. Additionally, you'll want to make sure that your PSU has enough wattage to handle the graphics card's power demands. Nvidia recommends a minimum 750W PSU for the RTX 3090, and some manufacturers may recommend even higher wattage for optimal performance.
Overall, it's crucial to plan and ensure your PSU is compatible with the RTX 3090 before purchasing to avoid any potential issues with power supply.
Is it worth buying a higher wattage PSU for the RTX 3090?
Yes, it is worth buying a higher wattage PSU for the RTX 3090. The RTX 3090 is a powerful graphics card that requires a lot of power to run efficiently. NVIDIA recommends a 750W power supply for the RTX 3090, but many experts recommend going for a 850W or higher power supply to ensure that the GPU is getting enough power and to avoid any potential issues like system crashes or instability.
A higher wattage PSU also allows for future upgrades and expansions of your system without having to replace the power supply. It also ensures that the PSU is not running at full load all the time, which can lead to overheating and damage to the components.
It is important to note that buying a higher wattage PSU does not mean that it will consume more power than needed, as the PSU will only draw the power required by the system. However, investing in a high-quality, efficient power supply is always recommended for any gaming or high-performance PC build.
What are the factors to consider when choosing a PSU for the RTX 3090?
When choosing a power supply unit (PSU) for the RTX 3090, there are several factors to consider. Firstly, the wattage of the PSU should be sufficient to power the graphics card, which has a TDP of 350 watts. A PSU with a minimum of 750 watts is recommended, but for better stability, it is best to choose a higher wattage PSU, such as 850 watts or even 1000 watts.
Secondly, the PSU should have multiple PCIe power connectors to support the RTX 3090, which requires three 8-pin connectors. Some PSUs may have only two or one 8-pin connectors, and using adapters is not recommended as it can cause stability issues.
Thirdly, choosing a PSU with a high efficiency rating, such as 80+ Gold or 80+ Platinum, will ensure that it operates at a higher efficiency, reducing power consumption and heat output.
Lastly, it is important to choose a reliable brand and model of PSU, as a faulty or low-quality PSU can cause damage to the graphics card and other components in the system. Popular PSU brands include Corsair, EVGA, Seasonic, and Thermaltake, among others.
What are the top-rated power supply units for the RTX 3090?
The RTX 3090 is a high-end graphics card that requires a powerful power supply unit (PSU) to function optimally. Several PSUs are recommended for the RTX 3090, but the top-rated PSUs include the Corsair HX1000i, EVGA SuperNOVA 1000 P2, and Seasonic Prime TX-1000.
The Corsair HX1000i has a platinum efficiency rating, which makes it energy-efficient, and it delivers stable power to the RTX 3090. The EVGA SuperNOVA 1000 P2 is also an excellent PSU that delivers stable power to the RTX 3090. It has an efficiency rating of 80+ Platinum, fully modular cabling, and a 10-year warranty.
Lastly, the Seasonic Prime TX-1000 is also highly recommended for the RTX 3090. It has an efficiency rating of 80+ Titanium, which indicates maximum energy efficiency, and it delivers stable power to the RTX 3090. It is also fully modular and comes with a 12-year warranty.
In summary, the Corsair HX1000i, EVGA SuperNOVA 1000 P2, and Seasonic Prime TX-1000 are three of the top-rated PSUs for the RTX 3090. They offer stable power, high efficiency, and come with long-term warranties.
What is the recommended power supply unit for the RTX 3090?
The recommended power supply unit (PSU) for the RTX 3090 is a minimum of 750 watts. However, it's important to note that this is a minimum requirement and depending on the rest of your system components, you may need a higher wattage PSU to ensure stable and reliable performance.
It's also important to choose a high-quality PSU from a reputable brand to ensure that it can supply the necessary power consistently and efficiently. Look for PSUs with at least an 80 Plus Gold certification, which indicates that they have a high level of efficiency and are less likely to overheat or malfunction.
In addition to wattage and efficiency, consider the PSU's form factor and cable connections to ensure it will fit properly in your case and have sufficient connections for all of your components.
Overall, investing in a high-quality PSU that meets or exceeds the recommended wattage for your graphics card is crucial for a stable and reliable system.
What wattage PSU do I need for the RTX 3090?
The recommended wattage for the Nvidia GeForce RTX 3090 graphics card is 750 watts. However, it is important to note that the actual power consumption will depend on various factors such as the specific model of the card, the CPU and other components in your system, and the workload on your system.
It is always advisable to use a power supply unit (PSU) that offers a higher wattage than what is recommended for your system to ensure that it can handle peak power demands and allow for future upgrades. A power supply that is too low in wattage may result in instability, crashes, or even damage to your hardware.
When choosing a PSU, ensure that it has enough PCIe power connectors to supply your graphics card with sufficient power. It is also recommended to choose a high-quality PSU from a reputable brand to ensure reliability and safety.