Best Power Supplies for RTX 3070, 3080, and 3090 GPUs

Top 10 Best Power Supplies for RTX 3070, 3080, and 3090 GPUs

Best Power Supplies for RTX 3070, 3080, and 3090 GPUs

Just a few days ago, NVIDIA announced their new Ampere architecture-based graphics cards and it is very clear that they are going to provide a huge step up in performance. Although these graphics cards reequipped with new and more efficient chip design, they will also be quite power-hungry.

If you are interested in one of these graphics cards, then you should know that these GPUs won’t fare well with an under powered power supply. As you may already know that, it could lead to overall system instability and crashes.

The RTX 3070 requires at least a 650 W power supply, while the RTX 3080 and RTX 3090 both require at least a 750 W power supply, as stated by Nvidia. When building a top tier gaming PC using these new GPUs, having raw power isn’t everything that you’ll want. You will also want to make sure that you get a stable, high-quality, and a quiet power supply to power up the hardware components in your PC.

List of Best Power Supplies for RTX 3070, 3080, and 3090 GPUs

We chose the 10 best power supplies for RTX 3070, 3080, 3090 to power them, which are mentioned below and we will also be going through them to help you choose.

AwardModel NamePrice
Best power supply for RTX 3070 Check Price
Runner-up best power supply for RTX 3070 Check Price
Best budget-friendly power supply for RTX 3070 Check Price
Best power supply for RTX 3080 Check Price
Runner-up best power supply for RTX 3080 Check Price
Best power supply for RTX 3080 with extra headroom Check Price
Runner-up best power supply for RTX 3090 Check Price
Best power supply for RTX 3090 Check Price
High-end pick for RTX 3090 Check Price
Best overkill power supply for any graphics card Check Price

EVGA Supernova 650 GA, 650W

EVGA Supernova 650 GA 650W

The very first pick from our list is the EVGA Supernova 650 GA, which is a 650-watt power supply. It is 80 plus gold certified and is a fully modular PSU, which makes this PSU easier to customize with cable sets.

It has a nice, good quality finish. It is also EVGA’s latest revision and it comes with all of the bells and whistles that you would expect to get from a high-end PSU. It also has 100% Japanese capacitors.

This PSU also has a zero-fan mode at low workloads, which makes it operate silently until the PC is under load. The fan on this PSU is a dual ball-bearing fan that makes sure that it makes minimal noise and offers long life. It is equipped with two PCI-e power connectors, and two SATA power connectors, which is great

It will not only protect your hardware components, but it will also deliver stable current efficiently. This power supply comes with a 10-year warranty, so you pretty much don’t have to worry about it for 10 years. It is an excellent option for RTX 3070-based PC build.

Specifications

Max Output650 W 80 plus gold certified
Dimensions86mm (H) x 150mm (W) x 150mm (L)
FanDouble ball bearing 135mm
Modular Cable TypeFully modular
Operating Temperature0° to 50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Over Current Protection Short Circuit Protection Over Temperature Protection
Efficiency90% or higher typically
Pros
  • It operates pretty quietly
  • It is efficient
  • It comes with a 10-year warranty
Cons
  • It only has a total of two SATA power connectors

Corsair RMX Series RM650X, 650W

Corsair RMX Series RM650X 650W

Corsair’s RMX line-up of power supplies is one of the most popular among enthusiasts. The one we are talking about here is the Corsair RMX Series RM650X, a 650-watt power supply. It is 80 plus gold certified and also features fully modular cabling. So, you only have to connect the cables that you need for easy cable management and a cleaner look.

It has a medium-speed rifle bearing fan. Even up to 50 degrees Celsius, it is able to deliver its full power continuously. It means that it has heat-tolerant components that are important because thermal energy is a major threat to stable power. In addition to that, Corsair also provides more protection features.

RMX series of power supplies use Corsair’s type 4 cables. For this power supply, the number of connectors is adequate, a part from the single EPS connector. Having two would have been better. It also has 100% of all Japanese capacitors.

This power supply comes with a 10-year warranty. Its fan is controlled by a conservative profile and a semi-passive mode, which keeps the fan inactive when the PC isn’t doing much. It is a great option for anyone who wants a power supply to power their PC and RTX 3070.

Specifications

Max Output650 W 80 plus gold certified
Dimensions86mm x 160mm x 150mm
FanRifle Bearing 140mm
Modular Cable TypeFully modular
Operating TemperatureUp to 50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Short Circuit Protection Over Temperature Protection
Efficiency90% or higher typically
Pros
  • It operates very quietly
  • It has quality caps
  • It provides great stable performance
Cons
  • There is a short distance between the connectors

SeasonicFocus GM-650, 650W

SeasonicFocus GM-650 650W

The Prime line-up of power supplies is aimed at the enthusiasts and the Focus line-up of power supplies is aimed at the more budget-oriented buyers. We chose the Seasonic Focus GM-650 power supply for our list. It is 80 plus gold certified. It is a semi-modular PSU. This means that only the 24-pin and 8-pin ATX power cables are permanently attached to the power supply, while the other cables can be connected as needed.

It has a 120mm fan, which is a bit small. It has a big effect on the noise operation when the PC is under load and may even have a higher temperature. However, this fan is a fluid dynamic bearing fan, which means that it should most probably last a long time. It is controlled by Seasonic Smart and Silent Fan Control technology that adjusts the fan speed according to the need of the PC.

It comes with a 7-year warranty. It may be a budget-friendly option for the users, but it certainly doesn’t lack in features and performance.

Specifications

Max Output650 W 80 plus gold certified
Dimensions86mm (H) x 150mm (W) x 140mm (L)
FanFluid Dynamic Bearing 120mm
Modular Cable TypeSemi-modular
Operating TemperatureUp to 50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Over Current Protection Short Circuit Protection Over Temperature Protection
Efficiency90% or higher typically
Pros
  • It provides stable and efficient performance
  • It has a smart and silent fan
  • It has a budget-friendly price
Cons
  • It is a semi-modular power supply

Corsair RMX Series RM750X, 750W

Corsair RMX Series RM750X 750W

To power up the Nvidia RTX 3080, the Corsair RMX Series RM750X is a great power supply, that is if you are not running a very power-hungry processor and it is also an 80 plus gold certified PSU. When it comes to power supplies, Corsair is certainly not a stranger as they have been providing the users with excellent power supplies.

It is an 80 plus gold certified power supply to provide the users with reliability and efficiency. In addition to that, it is a fully modular power to make cable management easier. That is because you will only plugin and use the cables that you need.

A popular category that sits at a sweet spot that has an affordable price and plenty of headroom for high-end hardware components is the 750W PSUs. This is exactly why all of the 750W power supplies should have two EPS connectors, while the RM750X only had one. However, Corsair did address this weakness of this power supply.

This PSU operates pretty silently and provides the users with stable and efficient performance and it comes with a 10-year warranty. This power supply is a great option for the RTX 3080.

Specifications

Max Output750 W 80 plus gold certified
Dimensions86mm (H) x 150mm (W) x 160mm (L)
FanRifle Bearing Fan 135mm
Modular Cable TypeFully modular
Operating Temperature0° to 50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Short Circuit Protection Over Temperature Protection
Efficiency90% or higher typically
Pros
  • It operates very quietly
  • It has a solid build quality
  • It has great ripple suppression
Cons
  • There isa short distance between peripheral connectors

EVGA Supernova 750 GA, 750W

EVGA Supernova 750 GA 750W

When it comes to power supplies, EVGA certainly has been one of the most popular manufacturers. Here we chose the EVGA Supernova 750 GA power supply. It is a 750 watt 80 plus gold certified PSU. It is fully modular, so you only have to plug in the cables that you need and will be using. This makes managing the cables easier as there are lesser cables to deal with.

It has a double ball-bearing fan and EVGA eco mode for quiet operation and exceptional reliability. It uses 100% Japanese capacitors too. The eco mode is for the time when the system is not using a lot of power.

This PSU has a nice, sleek black color finish and will probably easily go well with the rest of the PC build. It is packed with features that a high-end power supply would have.

It is a great option for a power supply for RTX 3080as it provides excellent stability. This PSU has a 10-year warranty, which is great.

Specifications

Max Output750 W 80 plus gold certified
Dimensions86mm (H) x 150mm (W) x 150mm (L)
FanDouble Ball Bearing Fan 135mm
Modular Cable TypeFully modular
Operating Temperature0° to 50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Over Current Protection Short Circuit Protection Over Temperature Protection
Efficiency90% or higher typically
Pros
  • It provides excellent performance at a slightly more affordable price
  • It operates very quietly
  • Solid build quality
Cons
  • There is only a small distance between connectors

Antec HCG850 Gold Power Supply, 850W

Antec HCG850 Gold Power Supply 850W

The EarthWatts Gold Pro line-up of power supplies by Antecisn’t the only one that got revamped, the High Current Gamer line-up of power supplies was also revamped. The great thing about these is that the company is manufacturing these higher-end PSUs using the Seasonic’sFocus Plus Gold platform as the foundation. They will provide solid performance in a more compact form.

Antec HCG850 is a fully modular 80 plus gold certified power supply and features some impressive power density. That means, it is packing a lot of capacity in quite a small form. It is only 14cm long and it also has a 120mm fan. Having a 135mm fan would have been better, but it works quite well.

The High Current Gamer’s power supply chassis is quite different from the Seasonic’s Focus Plus Gold, and it looks better and more distinctive. It is also ETA-A (for efficiency) and LAMBDA-S++ (for noise) rated by Cybenetics.

It is a great power supply for 3080 if you want to have some headroom. It also comes with a 10-year warranty. It is a very stable and reliable PSU.

Specifications

Max Output850 W 80 plus gold certified
Dimensions86mm (H) x 150mm (W) x 140mm (L) x
FanFDB Fan 120mm
Modular Cable TypeFully modular
Operating Temperature0° to 50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Over Current Protection Short Circuit Protection Over Temperature Protection
Efficiency90% or higher typically
Pros
  • It has a selectable semi-passive mode
  • It has an appealing price
  • It is a fully modular power supply
Cons
  • May get a bit noisy when the PC is under load

SilverStone Technology Strider 850, 850W

SilverStone Technology Strider 850 850W

SilverStone’s Strider Platinum series originally only had four power supplies that ranged from 550 watts to 850 watts. Then two units were added that were rated for 1000 watts and 1200 watts. Doing so made the line-up complete because it covers everything from the mainstream PCs to the high-end PCs.

We chose the SilverStoneStrider 850 platinum power supply for our list. It is an 850-watt platinum-certified fully modular power supply. It is based on a Sirfa/High power platform. The company doesn’t partner with an OEM other than Enhance quite often. This OEM is known for budget-friendly products.

This PSU is equipped with a 120mm fan due to its smaller size. Having a smaller fan size normally leads to more noise due to the faster-spinning fan blades. The good thing is that this power supply has a semi-passive mode which makes zero noise when the PC is not under much load.

It is a very reliable PSU and it provides great stability. It is a great option for the RTX 3090 GPU as it comes at quite an affordable price point for an850 watt PSU and it provides excellent efficiency.

Specifications

Max Output850 W 80 plus platinum certified
Dimensions86mm (H) x 150mm (W) x 140mm (L)
Fan120mm silent fan
Modular Cable TypeFully modular
Operating Temperature0° to40° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Over Current Protection Short Circuit Protection Over Temperature Protection
Efficiency92% or higher typically
Pros
  • This PSU is very efficient
  • It has quality electrolytic caps
  • It has a semi-passive operation
Cons
  • It doesn’t have a fan-test option

EVGA Supernova 850 P2, 850W

EVGA Supernova 850 P2 850W

The second-best power supply line-up by EVGA is the P2 and it has six PSUs with different capacities that range from 650 watts to 1600 watts.These six models are aimed for those users who simply don’t care about paying a little more for an 80 plus platinum certified power supply. The P2s are based on the Super Flower’s Leadexplatform just like most of the high-end EVGA PSUs. Which means that they will offer high performance.

Here we have picked the EVGA Supernova 850 P2 for our list. It is an 850-watt platinum-certified fully modular power supply. It also has a passive mode, which can be turned off. This power supply has some excellent specifications.

It also operates at pretty low noise, even when the PC is under load. When the ECO mode is enabled, then you will not be able to hear anything when the PC is under light or moderate level of load. One of the strong assets of this PSU is the Japanese caps, as they provide better reliability.

Not using high-quality electrolytes for the electrolytic capacitors may register good performance at the start, but after a short time,their performance will drop. The Japanese caps normally use high-quality electrolytes, which is why they age more slowly.

It is an excellent PSU to choose for the RTX 3090. It provides excellent efficiency and reliability with a 10-year warranty.

Specifications

Max Output850 W 80 plus platinum certified
Dimensions86mm (H) x 150mm (W) x 165mm (L)
FanDouble Ball Bearing 140mm
Modular Cable TypeFully modular
Operating Temperature0° to50° C
ProtectionsUnder Voltage Protection Over Voltage Protection Over Power Protection Over Current Protection Short Circuit Protection
Efficiency92% or higher typically
Pros
  • It has a solid build quality
  • It provides excellent efficiency and reliability
  • It has an excellent response to transient loads
Cons
  • Slightly lower hold up time than required

Corsair AX Series AX850, 850W

Corsair AX Series AX850 850W

A power supply upgrade won’t improve the benchmark scores or increase the frame rate of your favorite game. But it is still way more interesting than a lot of people may think.

Corsair is probably the only company that shows the most pride in their units, out of all the PSU manufacturing companies. They select their components carefully to help in delivering optimal performance in every category.

That is why we chose the Corsair AX Series AX850 PSU. It is rated for 850 watts 80 plus titanium certified and is also a fully modular power supply.

There is a button for the PSU’s fan profile at the rear, which offers an always-on and a semi-passive fan mode. If set to always-on mode, then the fan will keep spinning at all times and will maintain low speeds under most situations and will ramp up and down according to the unit’s load. On the other hand, if set to semi-passive mode then the fan will only start spinning when specific thermal conditions are met.

It is more of a high-end PSU and it provides excellent efficiency and reliability. This power supply has a 10-year warranty, so you probably don’t have to worry about it much.

Specifications

Max Output850 W 80 plus platinum certified
Dimensions150mm x 170mm x 86mm
FanFluid Dynamic Bearing fan 135mm
Modular Cable TypeFully modular
Operating Temperature0° to 50° C
ProtectionsOver Voltage Protection Over Current Protection Short Circuit Protection Over Temperature Protection
Efficiency92% or higher typically
Pros
  • It operates very quietly
  • It delivers great performance overall
  • It has a top-notch build quality
Cons
  • It is a bit expensive

Corsair AXi Series AX1200i, 1200W

Corsair AXi Series AX1200i 1200W

One of the most active PSU manufacturers has to be Corsair. Lastly, we chose the Corsair AXi Series AX1200i for our list. As the name suggests, it is a 1200-watt power supply. It is 80 plus platinum certified and it is also a fully modular PSU.

On the rear side of the PSU, there is a self-test button. The user can press it to perform a basic test of the power supply. When using this feature, make sure that the PSU is not connected to any system.

The fan in it is thermally controlled by the PSU and won’t start spinning until specific thermal conditions are not met. It uses a digital signal processor to deliver very clean and efficient power with real-time adjustments.

It also has a Corsair Link integration, so you can use Corsair’s Link software to monitor and adjust the noise and performance.

It is a great power supply for those who want to have the extra headroom for the other components as well as their GPU and don’t want to compromise on efficiency and reliability. It is great for any of the graphics cards and it also comes with a 10-year warranty.

Specifications

Max Output1200 W 80 plus platinum certified
Dimensions86mm x 200mm x 150mm
FanDual Ball Bearing fan 140mm
Modular Cable TypeFully modular
Operating Temperature0° to 50° C
ProtectionsOver Voltage Protection Under Voltage Protection Over Current Protection Short Circuit Protection
Efficiency92% or higher typically
Pros
  • This PSU is a highly efficient power supply
  • It operates pretty silently
  • You can use software that allows monitoring/control
Cons
  • Quite expensive

Conclusion

Choosing the right power supply comes down to you and your requirements. It can be a difficult task, so we will help you choose the right one. Make sure that you choose the one that fulfills your needs and requirements.

If you want to buy a power supply for RTX 3070, then EVGA Supernova 650 GA is the best PSU for RTX 3070, with the Corsair RMX Series RM650X following up closely as it is more expensive. The Seasonic Focus GM-650 is the best budget-friendly PSU for RTX 3070, in case you’re on a budget.

The Corsair RMX Series RM750X is the best PSU for RTX 3080 and the EVGA Supernova 750 GA falls just short. If you want to have some extra headroom for RTX 3080, then Antec HCG850 Gold Power Supply is the better option.

Although 750 watts power supply is enough for RTX 3090, the CPU and GPU max power consumption might need more than that, so we chose 850 watts power supplies just to be on the safe side.

The best PSU for RTX 3090 is the EVGA Supernova 850 P2, while the SilverStone Technology Strider 850 just couldn’t be the best one. If you want more of a high-end PSU, then the Corsair AX Series AX850 is better for you if you don’t mind paying the extra amount of money.

To have extra headroom for the hardware components in your PC and the GPU, the Corsair AXi Series AX1200i is the best overkill PSU on our list. But it is expensive.

FREQUENTLY ASKED QUESTIONS

How do I know that the capacity of the PSU is enough for my PC?

Check the max power consumption of your CPU and GPU and work out your PC’s
max power consumption. Make sure that the PSU that you choose has at least that
much capacity or more.

Can under powered PSU damage the components in the PC?

Yes, it is possible. Having a lower power PSU than your fully-loaded PC can
potentially consume may damage a different component or itself. For example, if you
have a 500W PSU, while the PC could potentially consume 550W or 600W. Then you
won’t notice anything probably. That’s because, normally your PSU does not max out,
but the potential is there. It is never recommended and you should change the PSU to a
higher capacity PSU as soon as possible.

Having a small headroom is always better. You can overclock and it also gives the GPU
to stretch and provide the best performance.

Do I need to buy a new and different power supply for the 12-pin PCI-e connector?

No. The founder’s edition GPUs have that 12-pin PCI-e connector and they come
with a 12-pin to two 8-pin PCI-e power connectors to be used with your normal PSU.
Also, the other vendors like Gigabyte, EVGA, etc. have two 8-pin PCI-e connectors on the
RTX 3000 series of GPUs.

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