Best PSU for RTX 4070 Ti in 2024 – 850W & 750W picks

Looking for the best PSU for the RTX 4070 Ti? look no further.

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The RTX 4070 Ti ended up being the rebranded (after much backlash) 12GB RTX 4080. Regardless, we’re here to show you the best PSU for RTX 4070 Ti, or power supply if you prefer. To look on the bright side, you’re kind of getting a 4080 for the price of a 4070 Ti. Not bad. The 4070 Ti is excellent for 1440p, and not too shabby for 4K gaming – and a GPU powerful enough to game in 4K requires a hefty power supply. We use our expert eye to keep this guide updated with the best options and ensure that these PSUs work well with the 4070 Ti. If you’re looking for a couple of quickfire suggestions, the MSI MPG A850G PCIE5 and Corsair RM850x are two of our favorites.

We’ve already figured out the best CPU RTX 4070 Ti, so it’s now time to delve into the world of PSUs. Many of the 4070 Ti graphics cards we see linger around a requirement of 700-750W for your power supply, so that’s a good metric to target. You can risk it with lower wattage, or provide a safety net and go higher; the latter option is the most sensible here. Let’s jump straight into our best power supply for RTX 4070 Ti top picks.

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Best PSU for RTX 4070 Ti in 2024

All PC components, no matter how powerful require a power supply, that much is obvious. What isn’t obvious, however, is the fact that you could be seriously over-doing it in terms of wattage on your PSU, or in contrast, under-doing it. You need a power supply that’s just right, without being wasteful. We think we have just the thing.

MSI MPG A850G PCIE5

MSI MPG A850G PCIE5

Wattage

850 W

80 Plus certification

Gold

Modularity

Fully modular

ATX 3.0

Yes

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Pros

• ATX 3.0 compatible
• 80 Plus Gold rating
• Full modular design
• 850W comfortably handles RTX 4070 Ti

Cons

• Basic cable design

For the best choice for your new RTX 4070 Ti, you can pick up the MSI MPG A850G PCIe 5. This PSU natively supports the new ATX 3.0 connector. Giving you the option to keep your cables to a minimum. And avoid frying squid connectors. It is rated 80 Plus Gold providing pretty good efficiency. Gold isn’t the best-rated, but it’s up there. The MPG A850G is great at converting energy, wasting very little. Who knew a power supply could help keep your energy bills down? There’s also some fantastic in-built protection to stop any surges or malfunctions from damaging your PC components.

The PSU is fully modular as well with its 12VHPWR. This means it’s a tidy PSU, not only does the modularity help you cut out unnecessary cables, the 12VHPWR connector ensures you only need 1 PCIe cable, as opposed to 3 with the current high-spec GPUs.

The MSI MPG A850G also has a “quiet mode” this limits the fan speed and keeps the PSU from working too hard under smaller loads. it’s not recommended you game in “quiet mode” especially if you have overclocks applied to any components.

Corsair RM850x

Corsair RM850x

Wattage

850W

80 Plus certification

Gold

Modularity

Fully Modular

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Pros

• Full modular, easy to replace cables
• 850W more than enough for RTX 4070 Ti
• 80 Plus Gold certification is energy efficient
• Great build quality

Cons

• No ATX 3.0 – requires adapter

If you’re not looking for just native support of the new power connector, there are still adapters you can utilize. This means you can use a better-tested and well-loved power supply like the Corsair RM850x. Worth nothing though that Corsair have since added an ATX 3.0 equivalent if you would prefer that. It’s a little bit pricier, but not by much at all: the Corsair RM850x SHIFT.

Back on subject with the original RM850x though, it has a Gold certification, it holds a good efficiency rating that will keep your graphics card up and running well. And with full modularity, you can swap out the cables that you prefer or upgrade the ones available, like the upgrade from Corsair.

Corsair RM750x SHIFT

CORSAIR RM750x Shift

Wattage

750W

80 Plus certification

Gold

Modularity

Fully modular

ATX 3.0

Yes

How We Review

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Pros

• ATX 3.0 and PCIe 5.0 compliant
• Efficient 80 Plus Gold certification
• 750W power is suitable for 4070 Ti
• Zero RPM fan mode for quiet running

Cons

• Could be less future proof if you want to upgrade

We lightly touched on the Shift variant of these Corsair RMx power supplies already. Just so you’re up to speed, these add support for ATX 3.0 to fully accommodate the 40-series of GeForce GPUs without the need of an adapter. They are also PCIe 5.0 compliant for that 12VHPWE cable which helps reduce the number of cables. For added value, we’ve dropped down to to the 750W model. Having 850W is great for future-proofing if you upgrade your GPU, but the added cost may be a little too much for some. Please note however that anyone also going for a high-end i7/R7 or i9/R9 CPU may want to play it safe with the higher wattage.

Yet again you get a fully modular design and the excellent build quality we expect from Corsair hardware (and peripherals for that matter). As standard with this range, this PSU has a 80 Plus Gold rating for excellent efficiency, while the Zero RPM Fan Mode means it runs quietly when not under stress. There’s not much more to ask for from the RM750x Shift, and overall excellent choice which matches the 4070 Ti’s requirements to a tee.

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Best PSU for RTX 4070 Ti FAQs

What power supply do I need for RTX 4070 Ti?

Nvidia recommends at least a 700W power supply to power the RTX 4070 Ti. That is for the Founders Edition though and so custom cards may ask for a higher rate. Such as the Strix recommending a 750W supply.

Is a 750W PSU enough for a 4070 Ti?

Yes, 750W is plenty sufficient to power a 4070 Ti. Nvidia recommends a 700W supply with custom AIBs suggesting a 750W supply instead so it is enough for the card.

Final word

The MSI MPG A850G is an excellent power supply for the RTX 4070 Ti. Not only is it efficient, but it’s safe, looks good, and conforms to the latest ATX and power cable standards. We recommend this is as one of the best PSU to pair with your RTX 4070 Ti right now – though Corsair’s range of RMx PSUs are some of our favorites as well.

We would recommend going for a 850W option to comfortably house the 4070 Ti. Too little wattage may create a power deficit in a high-end build, though 750W is suitable enough if you are opting for more mid-range hardware on the CPU side of things.