One of our most anticipated GPU releases this year was the RTX 4070: a high-performance graphics card from NVIDIA that is perfect for console-level graphical fidelity. But what is the best PSU for the RTX 4070? Now that the 4070 is readily available, we can highlight the best PSU for running a PC build with this graphics card. We’ve put together some rankings based on the 4070’s power supply, factoring in budget limits and future-proofing your PC build. So whether you threw your budget into the 4070 or want to be ready for the inevitable 5070 model, we’ve got you covered!
RTX 4070 PSU Requirements
The RTX 4070 PSU requirements are pretty straightforward: NVIDIA recommends a power supply of at least 650W – with an allocated graphics power of 200W. These are the minimum 4070 power supply requirements, however. With a GPU investment such as the 4070, however, we recommend spending just a little extra on wattage. A 750W PSU or higher gives you plenty of overhead on power supply for the 4070 whilst also preparing you for any future upgrades you may encounter. PSUs are long-lasting PC parts, so the right power supply can take you far.
It’s worth noting that there is a slight difference in the 4070 wattage as opposed to its sibling, the 4070 Ti. The 4070 Ti requires approximately 50W extra to run, with a minimum PSU of 700-750W and an allocated graphics power of 285W. Similarly, we recommend an 850W PSU for the 4070 Ti because of this: slightly more wattage pays off in the long run.
Best PSU for RTX 4070: Corsair RM750X
- Reliable
- Efficient
- Modular
One of the best PSU choices that you can find for the RTX 4070 is Corsair’s RM750x. It’s a fully modular power supply with 750W continuous power, and we recommended it as a 750-watt option for the 4070 Ti as well. Besides having seamless cable management with your PC components, the RM750x also supplies power efficiently with an 80 Plus Gold power rating. As with other premium Corsair PSUs, the RM750x has a quiet fan with a Zero RPM option, which only lets the fan turn on when needed (though it should be mentioned that this PSU can run a little louder than average). It also comes with a 10-year warranty, further guaranteeing its excellent performance long-term.
Premium PSU for RTX 4070: MSI MPG A850G PCIE5
MSI MPG A850G PCIE5
Wattage
850 W
80 Plus certification
Gold
Modularity
Fully modular
ATX 3.0
Yes
- ATX 3
- High quality power
- Effcient
- Overkill for 4070
The MSI MPG A850G stands out as a premier option for any graphics card. Offering outstanding performance and efficiency, this Gold-rated 850W PSU is technically overkill as an RTX 4070 power supply, but we recommend it as a future-proof option. The A850G offers PSU longevity for your future upgrades and gives you ample headroom for efficient power supply. With fully modular cables, the A850G allows for effortless cable management, resulting in a neat and visually appealing system build. Furthermore, the utilization of high-quality Japanese capacitors ensures stable and reliable power delivery to your system.
Best Budget PSU for RTX 4070: EVGA SuperNOVA 650 GA
EVGA SuperNOVA 650 GA 80+ GOLD Certified
Wattage
650W
Certification
80+ Gold
Modular?
Yes
- Reliable power supply
- Efficient
- No headroom for future upgrades
If you just want to meet the 4070 PSU requirements, then this EVGA SuperNOVA 650W PSU is your best bet. With an 80+ Gold rating, it provides ample power on a budget whilst also keeping ongoing costs low. Japanese capacitors keep the power supply stable, and the fully modular design makes this model excellently efficient. Though it will limit you should you want to upgrade to an RTX 4080 or any other high-spec GPU, this provides the serviceable wattage that you’d expect from a budget GPU whilst maintaining the efficiency of higher-grade models.
FAQs
Whilst it’s important that all your PC parts are compatible with one another, it is also worth future-proofing your build at the same time. Better GPUs require more wattage, so rather than having to upgrade both your GPU and PSU every time, a one-off PSU upgrade can work wonders.
The RTX 4070 has a minimum power requirement of 650W, for 200W to be allocated to the GPU. We recommend a PSU of between 750W and 850W for this graphics card – manufacturers like NVIDIA tend to specify a slightly higher-than-required power supply requirement regardless, but a better PSU means that you can easily upgrade parts around your power supply.
Power Supply Units are ranked in terms of efficiency, namely that they don’t draw more energy than absolutely necessary and don’t overheat or break down. The best PSUs are Gold or Platinum rated for maximum energy efficiency.
In Summary
That rounds off our top picks for the best PSU for the RTX 4070! We tried to cover a surplus of budget and power supply requirements for any PC build, so that regardless of your specifications you can easily upgrade!
Wanting to match the power supply of an even beefier GPU? We have extensive PSU guides for any requirements, including the RTX 4090 – check them out!
