Best PSU for RTX 3070, 3080, 3090 | A Review Guide (2023)

The RTX 3070, 3080, 3090 are the latest series of high-end graphics cards by NVIDIA. The RTX 3070 needs a power supply of 650W, while the RTX 3090 and 3080 uses a 750W power supply. So, you need only the best power supply for RTX 3090, power supply for RTX 3080 & RTX 3070.

There are hundreds of brands offering the best power supplies for RTX 3070, 3080, 3090. But not all products will fit you and your demands. So, after detailed research and market analysis, we have reviewed the seven best PSUs for RTX 3070, 3080, 3090 in-depth. 

After testing dozens of PSUs from the market, we have the” Best of Best” picks for you. Before presenting you a detailed review, we checked the performance, quality, and other crucial factors of each product on many different levels. So what you get is only the best.

Best PSU for RTX 3070, 3080, 3090 | A Quick Glance

Ranking	Best PSU for RTX 3070, 3080, 3090	Reviews
1.	Fractal Design Ion+ 860W	5 out of 5
2.	Seasonic FOCUS Plus 750 Gold	5 out of 5
3.	Seasonic PRIME TX-1000	4 out of 5
4.	EVGA Supernova 1200 P2 80+ PSU	4 out of 5
5.	Corsair RMX Series RM750X	4 out of 5
6.	EVGA SuperNOVA 850 G+	4 out of 5
7.	Corsair SF Series SF750W Power Supply	4 out of 5

Best PSU for RTX 3070, RTX 3080 & RTX 3090 | Detailed Review

1. Fractal Design Ion+

PC enthusiasts and experienced builders must be familiar with Fractal Design. Well, we credit their popularity to their high-end Products. Their primary reason for the fame is they focus on quality, not gimmicks and they offer what they promise. 

Fractal Design ION+ truly is a live example of perfection. This is why it is our best PSU for RTX 3090, 3070, 3080. With this PSU, your investment can never go wrong. We will present to you some of its best features that we totally fell in love with. 

It comes with 860W power and an entirely modular design. This PSU has a well-known built-in Zero RPM feature which means that the fans won’t spin unless they need to. It’s the kind of thing you would expect from a premium PSU.

You might think there are so many PSUs that come with RGB features, 80+ titanium, and other gimmicks. But it is the finest combination of design, performance, sound, acoustics, and, most importantly, reliability. We have never seen a PSU like this one. 

We’re huge fans of the flexible cables that are extremely simple to connect. The fan has durable FDB bearings. Besides it, an easy setup and high voltage regulation make this PSU more efficient. Have we mentioned its 10-year warranty? Yes, this is by far the most reliable power source for RTX 3070 Power Supply , RTX 3080 Power Supply & RTX 3090 Power Supply. Get it now.

2. Seasonic FOCUS Plus 750 Gold

Let us introduce you to the Seasonic Focus Plus Gold. It has a single rail layout, and its power supply gives more than sufficient power for your dream system. Its compact dimensions and modularity can help you streamline your PC-building project. 

Its 80+ Gold performance and quiet fans make this the best device for anyone looking for huge watts without any noise. This best 750w PSU is great for gaming PCs or a small-sized PC in which ventilation and space are essential aspects. 

Seasonic engineers have developed an innovative design in which they have used a copper plate instead of cables to connect the PCB and back panel. This revolutionary solution doesn’t just lower the error chain but also enhances production output efficiency. 

Fully modular uses only the necessary cables to minimize clutter and create an effective system with more airflow. This PSU delivers 80+ Gold efficiency to 87% when you are at 20% load, 90% at 50%, & 87% at 100%. 

Its “hybrid” silenced fan control operates in three stages: Silent mode, Fanless mode, Cooling mode to ensure you can achieve the ideal balance of heat distribution and silence. This is particularly helpful when the noise distracts you while gaming or working. 

Overall, this power supply is compact, fully modular, and hard to resist. This high-quality product is reliable and durable for years to come. So, we definitely know you will not be disappointed with this PSU. Grab it now for and satisfy your 3080 power supply

3. Seasonic PRIME TX-1000

We are here with the incredible Seasonic PRIME TX 1000. It’s a premium and high-wattage PSU that can 100% meet your demands. If you’re searching for a high-end PSU with an 800W power supply, then look no further than Seasonic PRIME TX 1000.

Seasonic’s PRIME series gives you the best power supplies, but they come at a high price which can disappoint some users. But performance-wise, it’s a win-win. They are among the best-constructed power supplies offering high-end performance. 

The particular Seasonic PRIME TX brings a capacity of 1000 watts which sometimes makes overkill for most gaming scenarios. For users who need 800+ Watts power supply, choosing a powerful PSU is a good idea.  

This PSU has become our favorite with the Titanium performance rating, low temperature, and almost silent operation. It comes with full modular capabilities and a top-quality hybrid fan control that satisfies all cooling needs. 

We don’t wonder why enthusiasts worldwide recommend this PSU to all gamers and PC builders. This is a PSU for high-end systems with 80+ titanium. So, it means less energy is wasted. We don’t see any reason for not buying it.

4. EVGA Supernova 1200 P2 80+ PSU

As you’ve probably guessed by the name, this power supply is completely overpowering for most gamers. Some might think that practically no one wants this power supply. But trust us, some high-end gamers need a 1000w power supply for 3090 and 3080. It offers an efficiency of 80+ platinum which means you get long-term durability. 

The most prominent feature in this power supply is its zero RPM setting; however, it’s called ECO mode. It’s all the same. But the fan curve is somewhat limited. So, if you need extra power, wait for a minute to allow the fan to start. 

The power supply is completely modular. This means you can throw away the useless cables. And we totally applaud a fully modular PSU like this. The cables are black-sleeved and made of top-quality materials, making them even more impressive.

With all due respect, we confirm that the EVGA SuperNova 1200W PSU is an absolute powerhouse for RTX 3070, 3080, 3090, and other 30x series. Other worth mentioning features are 100% Japanese capacitor and extremely quiet operation. Its 10-year warranty drops a cherry on top. Get your hands on it asap and flaunt it.

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5.  Corsair RMX Series RM750X

Create a quiet, powerful, reliable system that looks great and runs smoothly with none other than the Corsair RMX series RM750X. In a time when computers are more powerful and noisy, the Corsair RM750x feels like fresh air. This is a product that delivers a top-notch performance without making a hole in your pocket. 

Corsair RMX Series RM750X is a fully modular PSU and 80+ Gold certified to provide efficient performance and less operating expenses. It gives you a 100% powerful build and runs extremely quietly. Also, its fully modular design allows you to use only one cable type to allow for quick installation on any system.  

It also has a Zero RPM fan-mode integrated, allowing almost silent operation even when the load is low. You get high-current wires for every cable and an excellent level of ripple reduction. Now your system will operate smoothly without sudden shutdowns or weird sounds. Impressive right?

The RMX series power supply 750W is proof that excellent performance and features don’t need to cost a lot. This PSU comes with 100% Japanese capacitors and a new Intel Skylake to offer steady voltage stability. So you can overclock beyond limits knowing that your ripple current stays low even when you’re under heavy load. 

 

Flat cables improve internal airflow and reduce the cable bulk, offering excellent thermal prediction. Do not slip this high-end PSU out of your hand because, at this price, Corsair RMX Series RM750X offers you everything you can expect.

6. EVGA SuperNOVA 850 G+

EVGA is among the most prominent brands in the power supply market, offering high cooling, efficiency, premium build-quality, and whatnot! Their EVGA SuperNOVA 850 G+ offers you an ideal power supply for RTX 3070, 3080, and 3090.

The EVGA Supernova 850G+ gives you a high power supply and comes with Japanese capacitors that will last up to 10 years. It’s impressively efficient under normal loads, 115VAC at 92% and 220~240VAC at 94%.

Its features like PCIe adapters make it suitable for any configuration. The double-ball bearing 140mm fans provide exceptional cooling performance, which helps keep the systems running with zero vibrations or noise. 

Further, it delivers a fast response to all load changes, which many PSUs can’t achieve. This PSU is one of your favorites because it delivers 88 amps of power on a 12v rail to give you unmatched stability. Fascinating, isn’t it?

This PSU can easily handle the maximum 850 watts output. It is built to last long and deliver excellent performance even at high-speed loads. Its ten-year warranty ensures 100% customer satisfaction, so we don’t see any major flaws in this PSU.

We’ve always been a big fan of the EVGA SuperNOVA series of PSUs here at Mapmodnews. This new launch only strengthens its reputation in our minds. It’s an excellent all-around PSU that marks all the right boxes. This PSU will surely impress you.

7. Corsair SF Series SF750W Power Supply

Corsair gets one more spot on our list with something slightly different this time. Each PSU we’ve discussed is the typical ATX size. But the SF750 is different because it is an SFX power supply. We proudly recommend this best power supply for RTX 3080, RTX 3070 Power Supply & RTX 3090 Power Supply.

The SF series is the best option for a small form factor PSU. You can describe it as an A-tier PSU. So, stay assured you get only a reliable and durable PSU. Its “80+” platinum certificate makes it even more attractive for gamers.

SFX PSUs normally face coil whine issues, but Corsair has somehow efficiently managed to kick this issue out. We noticed the coil whining at 100% load, which is normal for all PSUs. Still, this PSU has a lot of power inside that we need to accept for the moment.

Due to the high demand, it is always out of stock. Hence, if you want this PSU, we recommend you wait for some discount to come up or buy it at its original price. But either way, you will thank us forever for suggesting this pick.

Things To Consider While Buying Best PSU for RTX 3070, 3080, 3090

1. PSU Brand/Make

The brand is always a major factor when purchasing PC components or accessories. It’s not that the PSU branding is the only aspect. Still, it’s important since various PSU brands get their components from different suppliers, and the differences in quality can be substantial between different manufacturers. 

Also, the recommended best power supply for RTX 3070 and 3080, 3090 are different and every brand fulfills it in their own ways. So, we recommend you buy PSU from the best brands to meet 3080, 3090, and 3070 PSU requirements and demands. 

2. Warranty Length

Warranty periods indicate the reliability and quality of a specific PSU. The longer the warranty of the PSU is, the more confidence the brand/manufacturer has in the specific model. Hence we can say that brands that offer lengthy warranties offer reliable and solid products.

The top tier-A power supplies come with a ten years warranty, sometimes even 12 years, like TX1000 Seasonic. A majority of mid-tier PSUs come with a five years warranty or more. When the guarantee is for three years only or less, it’s a low-quality unit, so avoid it.

3. Professional Reviews

You cannot completely evaluate the PSU quality from its specifications (though it can provide some clues). Checking positive reviews on the sites is really important. If a specific model does not have any positive reviews, avoid it or go for a reputed brand. 

Although customer reviews are great for getting people’s perspectives, they shouldn’t be the only source of information because you need some knowledge and tools to benefit from the PSU.  

4. Weight

An easy way to find out a PSU’s quality is to check its weight. The lower quality PSUs are noticeably lighter as compared to high-end units. In general, the more “weighty” or “meaty” the PSU is, the better its internals are. 

5. Check Efficiency Ratings

The most efficient PSUs have more efficient components, use less energy, generate less heat, and save the user from huge electricity bills.

The best method to determine the efficiency of PSU is to find the units having “80 Plus” certifications. This way, a unit loses only 20% heat and 80% efficiency.

High-efficiency ratings mean you have to pay high prices as well. So be certain to have some extra bucks to spend on your pick.

6. Choose the Cables Wisely

Talking about cables, you get three options: partially modular cabling, hard-wired cabling, and fully modular cabling.

• Fully modular cabling removes all the PSU, making installation and management simple. These PSU models are likely to be costlier than others.
• Hard-wired cables are connected directly to a PSU box. While this is more affordable than the other choices, the number of available plugs is small and does not offer customization.
• Partially modular cables offer the best of both by providing only the good cables and giving room for more components at a fair price.

Frequently Asked Questions (FAQs)

Q1. Is 1000w PSU Enough for 3090?

It’s sufficient to have enough power, and the recommended PSU should be at least 800w to deal with any extra power a higher-end component like fans and storage can draw. We would suggest going for 800W+ or above for RTX 3070, 3080, 3090 GPUs because they consume high power and run hot.

Q2. How do I choose my PSU Wattage?

The most suitable power supply for your PC is one that delivers the right amount of power for all components simultaneously. To calculate this manually, you multiply the amp’s of all components by the total voltages of every component. The final result is the total watts you need for your PC. Based on this, you can go for a 750 or 850 RTX 3080 Power Supply & 1000+W for RTX 3090.

Q3. How do I know if I need a High Power Supply for 3070, 3080, and 3090?

A weak power supply can cause system instability like no boot, intermittent reboots, or hanging. If your app is continuously hanging or crashing, it shows a weak power supply. So here you need the best PSU for RTX 3080, 3070, 3090 GPUs. 

Q4. What Power Supply Do I Need For RTX 3080 and 3090?

You will need an 800+W for both power supply for RTX 3080 and power supply for RTX 3090. These are high-end GPUs and demand high power.  

Some Last Helping Words

Selecting the best PSU for RTX 3080, 3070, 3090 is difficult because they have to meet your demands. After trying many reliable products, we came up with the 7 Best PSU to help you determine which one fits your needs. 

If you are looking for RTX 3070 Power , EVGA SuperNOVA 850 G+ is the ideal PSU to use. It’s affordable and offers the necessary features that you will be needing. Corsair SF Series SF750W is priced higher, but it is worth looking into.

Seasonic FOCUS Plus 750 is the top PSU that you can use with RTX 3080 power supply. We have picked versatile picks to cover the most reliable best PSU for 3090, PSU for 3080, and PSU for 3070. So, you don’t have to worry about running out of power while using any of these GPUs.

We hope your hunger to find the best PSU for RTX 3090, 3080, 3070 is now over. All these products have a premium quality build and offer what every gamer and enthusiast can expect. Tell us below which PSU you choose for your setup to offer valuable help to other readers.