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Best PSU For Ryzen 9 7900 (650W, 750W, 850W, 1000W)

Whether you want to purchase a PSU for your gaming system or for your regular business purposes, we have compiled a list of the Best PSUs For Ryzen 9 7900 for you. Focusing on this high-end processor, you need to match a PSU with the suitable power wattage and form factor. In our list below, the required form factor is ATX, and wattage ranges from a minimum of 750W to boost power performance of 1000W. In terms of efficiency, look for PSU with a high-efficiency rating such as 80 plus Gold or Platinum. 

All our selected products provide 80 plus certification ratings except Gigabyte which provide a Platinum plus rating with ATX form factor. That means you will get efficient peak performance of 90-92%, of PSU at 50%, load. These PSUs provide peak efficiency at half load without heating and overclocking your processor.

Modularity-wise, a fully modular PSU allows you to only use cables you need for reducing clutter and making it easier to manage your system. It is also suggested to look for industrial protection features before buying PSU. Over-voltage protection safeguards your system from power fluctuations and surges, ensuring the safety of other components. Let’s head down and get a comprehensive guide for the different specifications and pros of PSU. 

Our Recommended list of the Best PSU For Ryzen 9 7900

  1. Cooler Master MasterWatt 750 Modular Power Supply
  2. EVGA SuperNova 750 G5, 80 Plus Gold 750W, Fully Modular 
  3. Corsair RMx Series RM850x Power Supply
  4. Thermaltake Toughpower GF1 850W 80+ Gold Power Supply
  5. EVGA Supernova 1000 P3 Fully Modular Power Supply
  6. GIGABYTE PG5 1000W Fully Modular Power Supply

Ryzen 9 7900 PSU Requirements

  • Minimum wattage is 750W recommended.
  • Form Factor is ATX recommended.
  • Minimum warranty of 5 years and the maximum warranty can be 10 years. 
  • At least 80 plus Gold Certification is required but platinum plus can be considered.
  • Semi-modular design is required, but you can also go for fully modular cables.

Ryzen 9 7900 vs Ryzen 9 5900

  • DDR5-5200 VS DDR4-3200 Memory Type
  • 5.0 VS 4.0 PCI Express Version
  • 28 VS 20 PCI Express Lanes
  • 5 nm VS 7 nm Fabrication Process
  • 36x VS 30x Multiplier
  • 64MB VS 32MB L3 Cache
  • 5.4GHz VS 4.7 GHz Turbo Boost Frequency
  • Radeon(Ryzen 7000) VS No integrated GPU

1- Cooler Master MasterWatt 750 Modular Power Supply

Cooler Master MasterWatt 750 Modular Power Supply

Cooler Master’s products are known for their high quality and durability; no doubt that’s why they are popular among gaming PC enthusiasts and gamers. Our first pick today for best PSU is from Cooler Master’s MasterWatt product line. This modular power supply supports a semi-modular design in which essential components are hardwired to the unit while other cables can be removed or added as needed and this is also supported by RTX 3050 PSU , i5-13600K PSU. Granting you the freedom of easy wire management and hassle-free replacement of cables in case of wear and tear. 

Other than providing greater flexibility to the CPU, this PSU is also equipped with Cooler Master’s Silencio FP fan. Being a dustproof and noise-free fan, this latest fan minimizes turbulence and generates high airflow under 15% load while offering resistance to noise. With 80 plus Bronze certification, this PSU is capable of delivering peak efficiency of 85% at approximately 50% load. Consequently, it saves energy for the counterparts and reduces electricity costs. For necessary power purposes, it features a dedicated 36-inch long 16 AWG6-pin to 8(6+2) pin cable. 

Thick long 8-pin cable makes it compatible with all high-end video streaming and an ideal choice for GPU and ASIC mining operations. To avoid voltage fluctuations, Cooler Master’s modular master supply features DC to DC converter design to provide wide output voltage ranges. Unlike traditional transformer-based circuits, this dual forward circuit is smaller in size, allowing a more compact power supply design.


  • Affordable Pricing 
  • Easy installation
  • Dual forward circuit design
  • 5-year warranty 
  • LDB bearing design


  • No Japanese capacitor

2- EVGA SuperNova 750 G5, 80 Plus Gold 750W, Fully Modular 

EVGA SuperNova 750 G5, 80 Plus Gold 750W, Fully Modular 

EVGA SuperNova launched its G5 series with performance-packed features. With 80 plus Gold certification, it is designed to deliver peak efficiency of 91% at 50%. Similarly provides 87% efficiency on a minimum 20% power supply. Sturdy and thick 16AWG wire enables SuperNova 750 G5 to support AMD and Nvidia’s highly dynamic graphic cards and thisis also compatible with RX 7900 XT. This carries a stronger signal while offering less resistance and low power loss. Hence, saves the user from experiencing lagging and bottleneck issues. Successor to its award-winning G3 series, it is 35% cheaper and comes with 2 PCIe 6+2 connectors available. 

We also appreciate that EVGA launched its G5 PSU series with japan-made solid capacitors. Generally speaking, these capacitors grant the PSU better sealing capacity than a standard capacitor. These Japanese electrical condensers are less prone to explode and store a considerable amount of energy. A fully-modular power supply design gives you the freedom to build your system with less clutter and more coherence. It makes the overall temperature of your processor optimal and increases its stability and reliability. 

Coming towards the leverage improvements, its dual forward electronic circuit offers relatively low cost and higher functionality. DC-DC converter regulates linear voltage and provides stability to PSU. Last but not least, it is installed with FBD cooling fans, which is undoubtedly one of the reasons that make this PSU worth considering. Along with less friction, it increases the lifespan of the cooling system of the PSU, and as a result, you can use your PSU for decades.


  • 80 plus Gold Certified
  • Japanese electrolytic capacitor
  • Dual forward circuit design
  • 10 years warranty
  • Full modular cable design


  • Noisy fan

3- Corsair RMx Series RM850x Power Supply

Corsair RMx Series RM850x Power Supply

If you are a gamer and want to avoid complications while running high-potential games, then you can consider buying Corsair RM850x. Relatively to its predecessor Corsair  RM PSU series, it features magnetic levitation fan bearing and 100% japan-made solid capacitors. So apparently, it beats its big brother power supply unit in performance while maintaining the cost-effective pricing feature. Focusing on high performance and silent operation, Corsair engineered its cooling system with zero RPM fan mode and magnetic levitation 135mm fan bearing to bring innovation and more reliability than its predecessor definitely.

Compatibility-wise, its fully modular design and wide range of cables allow you to connect it with the latest motherboards and high-end graphics cards. Hence, making your customized PC building dream easy and hassle-free. Adding on, it supports in-cable capacitors, including ATX, PCIe, and EPS, with Molex and peripheral connectors. Featuring an ATX cable of 610 mm in length with 4x 4-pin Molex single cable and 4x PCIe 6+2 dual wire. All these connectors and cables, in combination with 14x SATA connectors, made this PSU a highly considerable candidate with potent circuit boards.

Not to forget that this PSU is 80-plus Gold certified, giving peak efficiency of 90% at 50% load. It grants you to enjoy a seamless experience while gaming or video streaming with its DC-DC converter circuit. Aside from that, it offers satisfactory load regulation at +12 V and 5 V, as well as tight regulation at 3.3 V. This PSU is highly efficient at light load and delivers full power potential at 47 degrees. Corsair  RM PSU series is perfect for RTX 4080 PSU and RTX 3090 Ti.


  • Noise-Resistant
  • Powerful efficiency 
  • Fully modular design
  • 12-pin power cable
  • Optimal temperature
  • 100% Japanese electrical condenser


  • The transient response could be better.

4- Thermaltake Toughpower GF1 850W 80+ Gold Power Supply

Thermaltake Toughpower GF1 850W 80+ Gold Power Supply

Our other powerful PSU today is Thermaltake tough power GF1 with an 80+ Gold efficiency rating. It comes with a fully modular design, 850 output wattage, and the best power regulation at 47 degrees Celsius. Engineered with a 140mm hydraulic bearing fan that provides better efficiency and performance than the traditional fans. Other than high performance, these fans are also designed to reduce noise and increase life span. HB fans produce an average of 34.63 dBA noise through their operation between 30-32 degree celsius temperature.

Moving on, this PSU also ensures industrial protections such as under-and over-voltage, short circuits, overpower, overtemperature, and overcurrents. Thermaltake didn’t compromise on the reliability and durability of the power supply and manufactured it with solid Japanese capacitors. These capacitors work 100% at 105-degree celsius and make this black-built box more than just an ordinary power supply unit. Its 30mV low ripple voltage encourages minimal fluctuation and provides you with a unit that is stable and consistent.

Moreover, it comes with an 18.8 ms hold-up time at 240V without shutting down and power interruption problems. If you are a user who wants to lighten up your PSU and want to customize the lightning. Then thanks to its manufacturers, it comes with an RGB lighting feature to keep your power supply glowing in the dark. It supports an 18 AWG gauge ATX connector, 20+4 pin, 3x PCIe (500mm + 150mm) cable, and 100mm FDD adapter. 


  • RBG lightning
  • 80 plus Gold rating
  • Budget-friendly
  • Protection feature set
  • 10-year warranty


  • Noisy output 

5- EVGA Supernova 1000 P3 Fully Modular Power Supply

EVGA Supernova 1000 P3 Fully Modular Power Supply

EVGA’s SuperNova 1000 P3’s 1000W is primed to supply power to multiple GPUs and high-end circuit boards. In terms of performance, the SuperNova 1000 P3 is exceptional and unprecedented and offers a seamless experience while gaming or live streaming. Moving on, its tight load regulation helps to minimize heat generation, as well as reduce the risk of damage to the PSU or connected devices due to voltage fluctuations. Being 80-plus Platinum certified means it shows peak efficiency at a high-end load of 92% and 90% efficiency at a bare minimum of 20% load.

To provide its user with reliability, it features standard Japanese capacitors and a fully modular design. This design not only anchors better airflow but also allows you to upgrade your system without replacing the whole PSU. Moving on, another important feature is the size of the PSU. A smaller PSU is compact and easy to install in a processor case. EVGA builds its 1000 P3 PSU with compact and reliable dimensions to make it compatible with a wide range of motherboards. Its latest electronic LLC resonant topology circuit is enough to handle energy transformation between input and output ports.

For silent operation, it is built with fluid dynamic bearing fans that not only provide ultra-quiet operation but also increase the life span of the power supply unit. As mentioned before, it is designed to supply power to multiple GPUs and high-end motherboards, so it comes with a wide collection of wires and connectors. It includes a quad 4-pin Molex and hosts a 6x 6+2 pin PCIe connector. 


  • 10 years warranty
  • ATX form factor
  • Fluid dynamic fan bearing
  • Multiple connectors and cables
  • 80 plus Platinum certified
  • Compact dimensions


  • Noisy than its predecessor
  • Not an efficient APFC converter 

6- GIGABYTE PG5 1000W Fully Modular Power Supply

GIGABYTE PG5 1000W Fully Modular Power Supply

Gigabyte UD1000GM PG5 is the next iteration of the UD1000GM, primarily focusing on its ATX v3.0 specification and compact design. ATX 3.0 has more stringent efficiency requirements, which means that PSUs that conform to this form factor are likely to be more energy-efficient. Along with making PCIe 5.0 connector compatible, it also increases the maximum continuous power rating of a PSU to 1000W. As a result, it develops a powerful Gigabyte UD1000GM PG5 PSU that supports high-end gaming system and server applications.

This PSU branches out and makes a strike into the desktop power supply market with its rifle-bearing fan. Keeping in mind, rifle-bearing fans are more durable and longer-lasting compared to sleeve-bearing fans. It also supports a large heatsink 200% wider than an ordinary heatsink, which makes its thermal solution effective and operational. Moving on, the DC-DC convertor design allows the mainboard to enhance the stability and efficiency of voltage regulation. To avoid potential limitations on the power distribution, it features a single +12V rail with a capacity of 1000W output.

To ensure 90% high efficiency, it is rated as 80 plus Gold certified and produces reliable power and transfers peak performance with its industrial 100% Japanese-made capacitors.


  • Enlarged heatsink
  • Protection features
  • Compact dimensions
  • 12+4 PCIe 5.0 pin connector
  • ATX form factor
  • 120mm HB fans 


  • Noisy Output
  • Load regulation can be get better

Best PSU For Ryzen 9 7900 Buying Guide

While considering a new power supply unit for your processor, it’s important to take into account other important factors before making a final decision. We have compiled a list of those significant components that are vital for a PSU. Without considering them, your processor can suffer and can’t provide the best performance. So, if you want to run your high-end game and content creation task to its full potential, you need to know them. Let’s have a look at those essential components that make up a powerful PSU. 


For our selected processor, the Ryzen 9 7900, the TDP is 170W. Moving towards our picked PSUs above, we have a wattage range rating from 750W to 1000W.  If you need to build a regular PC for your daily tasks, you can consider this PSU. Or if you are set to build your personalized CPU for high-end gaming we would recommend this PSU from our list. 

Cable Design

Basically, PSUs are built with three main types of cable design that can be fully modular or semi-modular. In our list, PSUs have a semi-modular and fully modular design. With a fully modular design, users have the freedom to adjust and manipulate wires according to their will. In a semi-modular setting, some cables are hardwired and others are removable. This option provides less clutter and more coherence with maximum airflow capacity.

Form Factor

Like motherboards and processors, PSUs also have form factors. In our product list, all PSUs are engineered with the ATX form factor. Apparently, ATX PSUs are designed to conform to a significant set of specifications so they can be compatible with a wide range of processors. ATX-built PSUs also possess more connectors, providing more flexibility for supporting peripherals and other devices.

Efficiency Certification

These certifications are the ratings granted to the PSU, which basically describe the efficiency of the PSU under certain loads. Most products listed in this article have 80 plus Gold certifications. That means they give their peak performance at 50 % load. On the other hand, If you are looking for a PSU for your gaming needs, then our EVGA SuperNova 1000 P3 will never disappoint you because it comes with 80-plus platinum certification.

Power Supply Features 

After the above important features, there are some other attributes that are essential for your PSU. These attributes might not harm or affect the working and efficiency of PSU, however, they are still purposeful. Like you can look for industrial protection or a warranty for the PSU. If it is not working properly or you face some troubleshoots, you can replace your PSU. Most of the selected Items in the above list come with a maximum of 10 years warranty. It ensures that all the above-mentioned PSUs are highly efficient and durable. 


Which is the Best PSU for gaming? 

Gigabyte comes with its latest UD1000GM PG5 with a 12+4 PCIe 5.0 pin connector and ATX form factor, that’s why it can be considered for high-end gaming.

Can I use a higher-wattage PSU than what my system requires?

Yes, you can use a higher wattage PSU like Gigabyte UD1000GM PG5, but you must consider your needs and requirements because a PSU that is too powerful for a system will use more energy and produce more heat than necessary.

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  • Areesha

    Areesha is a tech enthusiast and a freelance writer who loves to share her insights on the latest gadgets and innovations. She has been reviewing tech products for over five years, covering everything from smartphones, laptops, cameras, smartwatches, headphones, and more. She enjoys testing out new features, comparing different models, and giving honest feedback to her readers. Areesha’s reviews are always informative, engaging, and easy to understand. Whether you are looking for a new device, a gift idea, or just curious about the tech world, Areesha’s reviews will help you make the best decision. You can find her work on various websites and blogs, such as [TechCrunch], [CNET], [The Verge], and [Gizmodo]. You can also follow her on [Twitter] and [Instagram] to get the latest updates on her reviews and projects. Areesha is always open to suggestions and feedback from her audience, so feel free to contact her anytime. She is looking forward to hearing from you!

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