Best Power Supply For Ryzen 9 5900X In 2023

If you’re a gamer or a serious content creator, you must invest in a good quality power supply unit or PSU. The reason to write this statement is that you often need to overclock the system to keep up with the load and extensive usage. So having an adequate power stream becomes a necessity in that situation. In short, if you want to utilize the true performance capabilities of the chip, your system must have the best power supply for Ryzen 9 5900X

Other than that, if we look at the chip, it’s one of the latest AMD additions in the market, which performs pretty well due to its Zen 3 core architecture. In addition, its 12 cores and 24 threads can tackle any type of intensive load, especially where multithreading is needed. It ensures an enjoyable lag-free gaming experience with its jaw-dropping multitasking and superior single-core effectiveness. Hence, investing in the right type of power unit will let you feel the real performance beat.

Interestingly, my team and I discovered a strange trend in the market. Pretty much all the users know the benefits of the power supply but are often confused when selecting one. We have written this article to help such users in making the right decision plus save their time. We have tested tens of famous products from several brands and added in-detailed reviews of best-suiting seven items. You must read this whole post to gather precise ideas about the topic.

Quick Shopping Tips For Buying The Best Power Supply For Ryzen 9 5900X

Know the 80 Plus power rating system

The first and most important thing while purchasing a power supply unit is to understand the 80 Plus power rating system. For information, this system was introduced back in 2004 with some important highlights to understand a wide variety of supply units. You can collect many helpful ideas regarding the item if you fully understand this system. In short, you must understand the efficiencies at different voltages plus why this is so necessary. 

Consider efficiency

Considering the rated efficiency for different types of power supplies is the ultimate goal of introducing the 80 Plus power rating system. An efficient power unit not only results in better performance but also enhances the overall life span of the PSU, system, and even the connected elements like the processor and graphics card. Make sure that the unit has at least 80% power efficiency and follows the terms and conditions of the 80 Plus system. 

Spending more is better

A power supply unit is comparatively less expensive than the other system’s elements like the processor or graphics card. But still, you must go for more than a cheap unit to get ideal performance. Remember, the cheaper unit often uses low-quality build material that leads to lesser efficiency and performance. The rule of thumb is to go for a PSU that can provide 30% more power than the wattage you really need.


The safety of the power supply unit is another important consideration when deciding to buy one. The reason behind this statement is that you are dealing with a large amount of power that can even damage the system and connected elements during faulty conditions. So ensure that the unit has the capabilities like OVP (Over Voltage Protection) and short circuit protection to tackle the abrupt voltage stipulation and power surges. 


What if you buy a PSU and are unable to fit it into the system due to an unsuitable size? You either have to purchase another unit or return that to the store–both cases will consume your time and energy. To avoid such a situation, make sure to buy a unit that has an appropriate form factor or physical size according to its fitting slot. If the case can accommodate an ATX PSU, buy a unit with the same size rather than others.

Top 7 Best Power Supplies For Ryzen 9 5900X In 2022

Staff Pick
Thermaltake Toughpower PF1
Thermaltake Toughpower PF1 (Image credit: Amazon)

Thermaltake Toughpower PF1

Best $100 PSU for Ryzen 9 5900x


Brand: Thermaltake | Output: 750W | Efficiency: 89%at full load | Form Factor: ATX | Cooling method: Air | Cooling fan: 120mm hydraulic bearing fan | Power supply design: Full Modular | Warranty: 10 Years


Small-profile PSU

Wide range of connectivity options

High-quality capacitors

89% power efficient at full load


No MOV in the transient filter

Difficult cable routing

Thermaltake is also a quite market-in brand known for its ultimate high-quality built products and long-lasting speeds. If we look at the Thermaltake Toughpower PF1, it’s a jaw-dropping addition to the brand’s high-end PSUs stack with adequate performance, efficiency, and extremely low ripple noise. Unlike the previous Corsair AX series which is made for 850/100 watts power wattage, it has 750 watts of maximum DC output. 

No flashy feature is embedded into this masterpiece to save some bucks plus meet the title of the best $100 PSU for Ryzen 9 5900x. In contrast, it performs exceptionally well and gives an excellent value for the money. It follows the 80 Plus Platinum power supply rating so can give about 89% of power efficiency at full load and 92% effectiveness in half-load conditions. You can beat all types of 80 Plus Gold power supplies in terms of power stability and performance. 

You can utilize two EPS, twelve SATA, four 4-pin Molex, and six PCIe cables and connectors to establish some secure and fast connections. The distance between the peripherals connectors is quite lesser than the competition but the cable routing is complex due to the absence of in-cable caps. Further, this small-profile ATX power supply unit offers a 120mm hydraulic bearing TT-1225 fan along with some high-quality Japanese Rubycon capacitors. 

Final verdict: If I simplify my experience with this power supply unit, it’s a great value pick and adequate to provide mid-to-top-end efficiency. You can pair it with entry-level gaming systems, workstations, and office PCs without worrying about performance and power stability. In contrast, if you want something for an ultra-edge system, this might not be a better option but you can go for the Corsair AX 1000 series.

CORSAIR AX 1000 (Image credit: Amazon)


Best Corsair PSU for Ryzen 9 5900x


Brand: Corsair | Output: 1000W | Efficiency: 94% at full load | Form Factor: ATX | Cooling method: Air | Cooling fan: 135mm FDB bearing fan | Power supply design: Full Modular | Warranty: 10 Years


80 Plus Titanium verified

Fully modular

Impressive power efficiency

Soundless fan operations

8x PCIe & 2x EPS connectors

Warranty for 10 years


Short-distance peripherals connectors

The first product on the list is the famous Corsair AX 1000 that has some reasons for its reputation among enthusiasts. Firstly, it’s from the Corsair, a name of every tongue, and secondly, it provides adequate performance at an affordable price in its category. Apart from that, the brand has recently upgraded its AX stack to appealing 1000/850 watts models so these can prove their identity as the best Corsair PSU for Ryzen 9 5900x in the market. 

Since this power supply unit is approved for the 80 Plus Titanium rating, we don’t expect anything less from the item. To maintain the users’ happiness, the AX1000 delivers up to 94% of efficiency while letting you save a lot of power and especially, the power bill. On top of that, it offers excellent voltage regulation with minimal ripples and ensures the stable overclocking performance of the system and the rest of the elements. 

No doubt, the title of the best power supply for Ryzen 9 5900x and RTX 3070 card sits perfectly due to its performance and versatility. Another reason for this title is that the AX1000 is equipped with pretty much everything a gamer or content creator may need during their workflow. As far as connectivity matters, there are some good-sized cables with this fully modular power unit along with Molex connectors and a Berg adaptor for FDD connectivity.

At the end of the review, I would like to add some interesting discoveries regarding its sound-less operations and overall look. There is a 135mm cooling fan with FDB bearing and Zero RPM fan mode so the fan can automatically adjust its speed according to the temperature. In this way, you won’t have to worry about unwanted noises. Additionally, there are three-color customizable magnetic side labels to choose the PSU’s style and colour. 

Final verdict: The Corsair AX100 is a great power supply unit for gamers and high-end content creators and quite famous among tech enthusiasts. It offers up to 94% of efficiency since it’s an 80 Plus Titanium verified unit. In short, if you want to fully utilize the true capabilities of the chip then this could be the best power supply for AMD Ryzen 9 5900x in terms of quiet operations, attractive aesthetics, and more.

XPG CORE Reactor
XPG CORE Reactor (Image credit: Amazon)

XPG CORE Reactor

Best PSU for Ryzen 9 5900x and RTX 3080


Brand: XPG | Output: 650W | Efficiency: 87% at full load | Form Factor: ATX | Cooling method: Air | Cooling fan: 120mm fluid dynamic bearing fan | Power supply design: Full Modular | Warranty: 10 Years


Super-compact power unit

Well-protected PSU

Efficient and silent operations

Fully modular


Two EPS connectors in the same cable

XPG is a sub-brand of ADATA and not that famous as the previous brand among enthusiasts. But its Core Reactor series of power supply units hold a completely different story than the brand’s name. It’s well-known for being a budget-friendly addition to the market plus having a good power supply for Ryzen 5900x and RTX 3080 graphics card. There are three offerings in the series with 650W/750W/850W power delivery where the 650W is under discussion. 

Like the other units in the series, it’s an 80 Plus Gold certified power unit and comes with high-quality Japanese capacitors and a massive 10-year warranty. So you can utilize it for a longer time while getting 90% power efficiency at half load and 87% effectiveness if you have a full load. Overall, it’s a compact-sized full modular PSU with tough high-quality components and an attractive layout–such a combination minimizes the cable management issues plus simplifies the build.

No doubt, this power unit is facing strong competition in the market where it sometimes wins plus seems to lose as well. The power supply unit has two EPS connectors to make it compatible with high-end motherboards and processors which is great but there are some downsides as well. Firstly, there is an insufficient number of sockets to install EPS connectors to reduce the voltage effectively, secondly, no in-line capacitors that make string lodging harder.

Final verdict: The XPG Core Reactor 650W is an excellent power supply unit in terms of an affordable price tag and adequate performance and efficiency. Moreover, it’s quite easy to install due to its super-compact size and is the best PSU for Ryzen 9 5900x and RTX 3080 graphics card. Except for the fan failure protection, it has all types of safety and protection features to save itself and the rest of the connected elements to be burnt or damaged.

CORSAIR RM750X (Image credit: Amazon)


Best Premium Power Supply for AMD


Brand: Corsair | Output: 750W | Efficiency: 87% at full load | Form Factor: ATX | Cooling method: Air | Cooling fan: 135mm rifle bearing fan | Power supply design: Full Modular | Warranty: 7 Years


Impressive performance 

Operates silently at half load

Has a long hold-up time

Fully modular

Two EPS connectors

Four PCIe attachments


Short-distance peripherals connectors

Difficult cable routing

Once again, we have something from the famous and well-established tech manufacturer, Corsair. The first product on this list is from its famous AX series which is made to power high-end systems. If we slightly lower our expectations, the brand has the RMX series of mid-end PSUs for us.

There are five power supply units in the stack that can provide an effective 550W to 1000W power input–we’re currently reviewing the 750W version. Not only the RM750X is 80 Plus Gold certified but the whole series. So, you can expect an impressive level of 90% at half load but it reduces to 87% in full-load conditions which is the only aspect that can be improved.

Overall, the high-grade Japanese 105c capacitors are adequate to work in tight conditions and can provide an effective and smooth voltage stream. It’s the best premium power supply for AMD processors with the best value and excellent performance.

You get a pair of EPS connectors and four PCIe attachments that are enough to deliver full power. However, the cable routing could be an issue plus there is a small distance between 4-pin Molex connectors since the number of peripheral connectors is increased. Other than that, it’s a great full modular board and comes with flat cables. In addition, the external look of the unit is quite attractive with a fan grille, triangle perforations, and a black color combination.

Final verdict: The brand has notably improved this RX750X than the one launched back in 2018. We can see a lot of improvements and excellent performance of this power supply unit. No doubt, it’s a great choice for the mid-end build but still, the brand can improve the lineup according to the growing competition. If we compare it with the previous model, the RX750X is less quiet but not noisy at the same time with only a 28 dBA noise level.

Best Pick
Corsair CX450
Corsair CX450 (Image credit: Amazon)

Corsair CX450

Budget Power Supply for Ryzen 9 5900x


Brand: Corsair | Output: 450W | Efficiency: 82% at full load | Form Factor: ATX | Cooling method: Air | Cooling fan: 120mm Rifle bearing fan | Power supply design: Non-Modular | Warranty: 5 Years


Affordable price 

All types of protection features

Has a great soldering quality

Five-year warranty


 Only one PCIe connector

Short-distance peripherals connectors

We have already reviewed some premium Corsair’s PSUs from the AX series and RMX series. In contrast, the Corsair CX450 is telling a different story. It’s for those customers who want a budget power supply for Ryzen 9 5900x without compromising the performance. Interestingly, this model is manufactured under two names, Great Wall and Channel Well Technology, and this fact often makes the buyers confused. We will try our best to introduce you to this masterpiece using the simplest terms. 

It seems that there are more differences between both types of models rather than having the same similarities–we will try to tell you all of those in a one-by-one manner. The Great Wall (GW) unit can provide 85-88% efficiency whereas the Channel Wall Technology (CWT) can go up to only 85% power efficiency. Both use the same 120mm rifle bearing fans but the GW unit has a noise level of about 35-40 dBA against the CWT’s 25-30 dBA maximum sound. 

Moreover, both types of PSUs are quite hard to differentiate unless you don’t know some factors that are going to be discussed now. You can check the built type with the reference designator which is RPS0053 in the case of the CWT version and RPS0063 for the GW power unit. On the other hand, some similarities between both include the same resonant converters, voltage regulation modules, five years warranty, and same fixed cables which is a drawback of the other units. 

Final verdict: The Corsair CX450 is the perfect PSU for you if you want to buy an affordable product for the Ryzen 9 5900x power consumption. But there are two manufacturers of the same type of 450W PSU where the GW unit is more efficient than the CWT in terms of efficiency but loses for producing more noise. If these make you confused, you can go for the EVGA 450 BT which is available at pretty much the same price.

Fractal Design Ion SFX
Fractal Design Ion SFX (Image credit: Amazon)

Fractal Design Ion SFX

Best Overall PSU for Ryzen 9 5900x


Brand: Fractal Design | Output: 650W | Efficiency: 87% at full load | Form Factor: SFX | Cooling method: Air | Cooling fan: 140mm FDB bearing fan | Power supply design: Full Modular | Warranty: 10 Years


SFX-ATX mounting bracket

A massive ten-year warranty

Flexible and high-quality cables

Full modular unit


Comparatively noisy

Lower efficiency

Fractal Design has got a name for manufacturing high-end cooling solutions and even blissful power supply units. If we look at its Ion SFX series, it shares a few same features and specifications as the SilverStone’s SFF PSUs. It means you can enjoy the same SFF’s cooling performance and efficiency with this SFX series. Interestingly, the Ion SFX 5650G matches the quality and execution with the pricey Corsair SF600 and Seasonic Focus SGX-650 and the same-priced EVGA 650 GM. 

Two models are there in the series with 500W and 650W capacities where we have the top-of-the-stack, the 650W version. Thes series falls in the 80 Plus Gold verified category so you can expect a smooth 90/87% efficiency in the 50/100% load conditions. Remember that the Premium Japanese 105°C capacitors play a pivotal role in getting such an impressive level of efficiency and durability. With so much effort, it becomes the best overall PSU for Ryzen 9 5900x.

As I mentioned in the buying guide section, protection is one of the must-have factors for all PSUs to ensure safety and stability. Well, this one is fully-protected from the abrupt voltage abruptions with all types of protections related to voltages, short circuits, and irregular current. Further, this unit is fully modular and comes with flexible cables that feature UltraFlex technology. In addition, these cables have high-count wires that are effective and easy to install. 

Final verdict: The full modular Ion SFX 650W has a long list of impressive features including sound-less performance, a large fan, and flexible cables. Not only that, it beats the famous Corsair SF600 and Seasonic Focus SGX-650 while having a lower price tag. In addition, it features all types of protection for safety and long-lastingness. So, if you want an all-rounder and efficient power supply unit without spending much, this unit is a perfect match for you.

Budget Pick
NZXT C850 850W
NZXT C850 850W (Image credit: Amazon)

NZXT C850 850W

Best 850W Power Supply for Ryzen 9 5900x


Brand: NZXT | Output: 850W | Efficiency: 87% at full load | Form Factor: ATX | Cooling method: Air | Cooling fan: 135mm Fluid Dynamic bearing fan | Power supply design: Modular | Warranty: 10 Years



Long hold-up times

Fully modular PSU

Attractive look


Mediocre transient response at 3.3V

Noisy operations

NZXT has been in the market for more than a decade and has kept discovering and manufacturing updated computer-related components. The brand’s C850 power supply unit provides a mid-ground between lower 450W and top-tier 1000W products with an 850W of DC power output. Compared with the RM850X, this PSU is roughly $50 cheaper but doesn’t give that much difference in performance–the absence of RGB lighting plays a key role in keeping the price lower. 

Moreover, the C850 is quite similar to the NZXT E850 with several similarities but lacks the CAM digital integration features. Quality-wise, the brand has embedded all-Japanese capacitors along with other components to make a high-quality construction. In addition, it’s an 80 Plus Gold approved PSU so it can provide overall 87% power efficiency at full load and a single +12V rail. It’s undoubtedly the best 850W power supply for Ryzen 9 5900x with all those appealing aspects and efficiencies. 

Apart from that, you get all types of connectivity options including the six SATA power and six peripherals connectors. The cherry on the top is that it has a cable for every connector that can be utilized to perform the related operations. There is a 135mm Fluid Dynamic Bearing fan, excellent, but it gives 44.5dBA maximum noise which is slightly disappointing. However, the silent mode can help us to reduce this sound very well but still, it’s a drawback of having this unit. 

Final verdict: The NZXT C850 is a great mid-ground 850W power supply unit between the low-end 450W or 650W and some top-tier 1000W PSUs. Moreover, it’s an 80 Plus Gold certified unit so you can expect a stable 90/87% power efficiency at half/full load, respectively. There are some drawbacks in this unit like the absence of CAM digital integrations and noisy operations but overall it’s best in terms of power efficiency and value for money.

Frequently Asked Questions

What is the best power supply for Ryzen 9 5900X?

The Corsair AX 1000 is the best power supply for AMD Ryzen 9 5900x with a blissful performance. It’s the 80 Plus Titanium certified fully modular PSU and offers an impressive power efficiency to save power and power bill. So, if you want sound-less operations along with a long list of connectivity options like eight PCIe and two EPS connectors, this is for you. 

How much power does a Ryzen 9 5900X need?

AMD has recently introduced the Ryzen 9 5900X and 5950X for high-end usage. Both have a default TDP of 105W so these are going to use 105W power during most of the usage cases. However, the Ryzen 9 5900x power consumption can even go up to 142W in some cases so make sure to have a Ryzen 9 power supply to get peak overclocking performance. 

What power supply do you need for a Ryzen 9 5900X?

There is a long list of power supplies that can work out with the Ryzen 9 5900X and can take it to its maximum potential. But if you’re a budget-conscious user, the Corsair CX450 could be a perfect option for you being the best Ryzen 9 power supply. There are two manufacturers of this unit so both have several differences plus a few common traits as well–you can read an in-detailed review in this article. 

What power supply do I need RTX 3070 Ryzen 9?

The Corsair RMX series must be your choice if you want to buy the best power supply for Ryzen 9 5900x and RTX 3070 with an excellent value for money. I suggest you go for its 750W version since it has an impressive performance, a long hold-up time, and more. In addition, it features a pair of EPS and four PCIe connectors that are adequate for connectivity purposes. 

Last but not least:

The AMD Ryzen 9 5900X is one of the fastest chips in the market with 12 cores and 24 threads. It features excellent single-core and multi-core performance along with all the required capabilities for multitasking. You need to have the best power supply for Ryzen 9 5900x to utilize the true potential of the chip. Therefore we have tested several products that are currently available in the market and selected the eight best ones along with in-detailed reviews and pros-cons. 

Since each one has its own specific benefits and drawbacks, each is perfect for different types of usage. If you want an affordable power unit, you can choose either the Corsair CX450 or go for the Ion SFX 650W. In contrast, if you have a lot of bucks in your pocket and want a high-end unit, the Corsair AX 1000 is a perfect fit for you. Many users are often concerned about the valued product so they can choose Thermaltake Toughpower PF1 750W or Corsair RM750X.

Mathew Robinson
Mathew Robinson is an IT professional who has worked for 5 years in gaming PC industry. He has completed his MSc from Australia in advanced manufacturing and has a good grip in his field. He currently works on websites related to computer components to provide valuable information to buyers.