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Planning to pair up your Ampere card, you want the best PSU for RTX 3070 to match it. It is a more powerful card, and when it comes to the power rating you’re after you need to look at the higher rated components. This will be the CPU and GPU, and they dictate the Watts.
With the TDP of 220W on the card, the required system power might vary on the model. The FE model suggests 650W but some of the best RTX 3070 models suggest up to 750W. And with that, you want to find the best power supplies for it, with a minimum of that 650W rating. So what is the best option to pair with the Nvidia GPU, will it be as hard as the best GPU for RTX 4090?
Best PSU for RTX 3070
Best overall PSU for RTX 3070 – Corsair RM750x
Corsair RM750x
Dimensions
6.3 x 5.9 x 3.4 inches
80 PLUS Certification
Gold
Wattage
750W
Modularity
Full
- Reliable and efficient
- Fully modular
- Bit on the more expensive side
For the best overall PSU for the RTX 3070, the Corsair RM750X is the way to go. From a reliable and popular brand, it gives a good option for a middle-of-the-line price and builds quality.
With a 750W rating, it also has a gold 80+ certification. This means good efficiency for all that power it will be delivered to your PC parts. It features the zero RPM fan mode and is tuned for low-noise operation. With a large fan, it doesn’t spin up too loud to keep the temperatures down inside of it.
For the available cables, it has two EPS, nine SATA, one floppy, four PCIe, and one ATX connector. A bit more limiting on expansion and being able to plug in separately into your GPU but it will still handle the loads.
Best budget PSU for RTX 3070 – EVGA 750 GQ
EVGA 750 GQ
Dimensions
85 x 150 x 165 mm
80 Plus Certification
Gold
Wattage
700W
Modularity
Semi
- Great value for money
- Lack of modularity
If you’ve spent enough on the rest of your build, the power supply might be your last thought so you might just want the best budget PSU instead. So there the EVGA 750 GQ is the choice for you. It gives you great value and quality without sacrificing too much for the price.
You do lose out on some comfort with it, as it’s not a fully modular PSU but a semi. The motherboard 24-pin is fully plugged in so it does limit you if you want to replace the cables you have in your build. It also has an eco mode but does have a fan on the louder side, with a level of around 35 dB according to EVGA,
In terms of connector quantities, you get one 24-pin, two EPS 8-pin, nine SATA, three 4-pin, two floppy, and six 8-pin connectors. So it still has everything you might need as standard, and even older options.
Best efficient PSU for RTX 3070 – SeaSonic FOCUS Plus Platinum
SeaSonic FOCUS Plus Platinum
Dimensions
5.5 x 5.9 x 3.4 inches
80 PLUS Certification
Platinum
Wattage
850W
Modularity
Full
- Highest efficiency rating
- Plenty of available connectors
- Much more expensive short term
For a premium option and for those wanting to save money over time, the Seasonic Focus Plus Platinum is the choice for you. As with a platinum 80 Plus rating, it’s the highest efficiency you can ask for. So that most of that input is being utilized well, but that comes at a higher price for the premium.
Still a more entry-level option from the reputable brand it is still well supported. With the fan controls button to change the modes from fanless or not, it does aim to keep silent as much as possible. And for its connectors, you get one motherboard, two CPU, six PCIe, ten SATA, one Molex, and even one Molex to FDD adapter.
Best PSU for RTX 3070 – Things to consider
Deciding between which options to go for, there are some choices to make. If it’s considering the efficiency rating, future upgrades, or a fully modular design we look into what some of the important ones are and what to consider.
Modular design and cable connectors
When assembling your PC, it’s important to think about cable management. Regardless of whether you’re concerned about it or not, modularity can simplify the process of installing the power supply. By only using the necessary cables, you reduce the amount of cable clutter, and a modular PSU allows you to lessen this impact. For instance, if you’re only using NVMe drives and not a SATA SSD, you can eliminate the need for the extra connector, thereby reducing the clutter. Fully modular cables also provide the flexibility to add custom options, enhancing the aesthetics of your gaming PC as well as not interrupting airflow.
The number and type of connectors provided should also be taken into account. For instance, a high-end graphics card may require substantial power. A custom 3070 card, for example, might need around three PCIe power cables, ideally from separate connectors. Different connectors can simplify the addition of these options. While standard motherboard or CPU connectors will always be available, their quantity may vary.
Reliability and power efficiency
The power supply, although not always the first component chosen, is a crucial part of your PC build. It’s essential to choose a high-quality power supply to prevent it from failing and damaging other components. Therefore, it’s advisable to opt for well-known brands, especially considering the power surges caused by high-end graphics cards.
If you’re concerned about energy costs, the efficiency of your gaming PC becomes a significant factor. The process of converting AC power from your wall outlet to DC power for your computer isn’t flawless, and some energy is lost as heat. Therefore, an 80+ certification is a standard requirement. While white or bronze certifications indicate less efficiency, platinum and titanium certifications represent the higher end. However, these more efficient options often come with a higher price tag.
It’s also important to ensure that the PSU has an eco mode button or variable power modes. This feature prevents the fan from spinning up and creating unnecessary noise under low load. It also contributes to power conservation.
Power supply form factor
If you’re contemplating a small form factor build, you might need more than just a modular power supply to maximize space. There are different sizes available, such as the SFX, which is significantly smaller but also more expensive due to its specialized design, compared to the ATX standard.
Final word
One of the best GPUs of its time needs a good pairing, much like the best PSU for RTX 4080 or 4070 Ti, these ensure your gaming rig lasts. And there are plenty of options to pick from when it comes to considering which one to go for.
