Best PSUs to Buy for the RTX 5070 Ti

The NVIDIA GeForce RTX 5070 Ti is the third card launching as part of the RTX 5000 lineup of graphics cards. This powerful GPU can offer great framerates at 4K and 1440p with ease. On paper, the RTX 5070 Ti shares similar specs to its RTX 4000 predecessor, the 4070 Ti SUPER, but one thing has certainly changed: the power draw. Consuming 300W of power, the RTX 5070 Ti requires plenty of juice, so we’ve tested a range of excellent power supplies to determine which is the best PSU for the RTX 5070 Ti.

This article is part of a series of buyer’s guides that explore the best components to pair with the RTX 5070 Ti. We’ve explored CPUs and PC cases, but this particular piece examines the best power supply units. We’ll delve into the specs, features, and pricing of each power supply, providing a solid overview to help you determine which is the best PSU for your 5070 Ti PC build.

The Best Power Supplies for the RTX 5070 Ti

1. Corsair RM750X

The first power supply in this roundup is the Corsair RM750X. As we’ve alluded to above, the Corsair RM750X is a power supply we’ve used across several PC builds due to its reliability and a number of other factors. This is a 750W unit, ample for the RTX 5070 Ti, which draws 300W of total graphics power. The RM750X is ATX 3.1 compliant and PCI-E 5.1 certified, so any high-power excursions caused by transient spikes won’t cause any damage.

This also means that the RM750X supports the 16-pin power connector, which all NVIDIA RTX 5000 series graphics cards use to pipe more power through one cable. This means you won’t have to deal with the finicky adapters that don’t look great and are often challenging to cable manage.

This power supply is Cybenetics Gold certified, ensuring minimal excess power draw that could be lost as heat or extra noise. The RM750X unit also has an A- noise rating from Cybenetics, which guarantees minimal sound during operation. Corsair also assists this by turning off the fan once it reaches a minimal load level, eliminating any buzzing or whirring.

Regarding the cons, the main caveat of this power supply is its price. This is more of a premium unit, and because of this, it isn’t the most price-competitive 750W power supply we’ve seen. So, if you’re sticking to a particular budget, it may be worth considering an alternative 750W PSU.

2. MSI MAG A850GL PCIE5

The MSI MAG A850GL PCIE5 is a power supply we recommended in our roundup for the RTX 5080. If you’re looking for more juice than what the Corsair RM750X offers, the MAG A850GL PCIE5 is the power supply we recommend considering. This 850W power supply is fairly similar to the RM750X in terms of features. It offers an 80 Plus Gold, Cybenetics Gold, and PPLP Gold efficiency rating, minimising any excess power draw at 50% load.

Additionally, the MAG A850GL PCIE5 also supports the ATX 3.1 and PCI-E 5.1 standards, which is great to see. MSI uses flat cables instead of braided ones seen on the Corsair RM750X, which are arguably easier to manage. They free up space in your build and reduce the risk of restricting airflow. It’s also worth noting that MSI uses a dual-colour 16-pin cable, providing an easy way to determine if GPU power is plugged in fully.

The MAG A850GL PCIE5 is fully modular, allowing you to pick and choose the cables you need, further aiding the cable management process. Additionally, this compact unit makes it easier to install in smaller form factor builds while freeing up space in your power supply chamber.

The MAG A850GL PCIE5’s biggest weakness is its noise output. Cybenetics rates this power supply as Standard+, which means it will be more audible during lower loads and louder during more intense workloads.

3. Cooler Master GX III 750W

The last power supply we’ll look at in this roundup is the Cooler Master GX III 750W unit. We’ve picked out this particular unit because it is incredibly efficient and operates almost silently under load. According to Cybenetics, this PSU is platinum-rated instead of gold, which means you’re getting a little bit more bang for your buck despite this being an 80 Plus Gold-certified PSU.

In terms of noise, the GX III 750W offers a honeycomb-like construction and strengthened brackets to ensure ample airflow and minimal buzzing or whirring. Again, according to Cybenetics testing, the GX III 750W PSU has an A- noise rating, operating around 15-20 dBA at 50% load.

Regarding the rest of the features, the Cooler Master GX III 750W is fully modular and supports the 16-pin cable. This allows you to pick and choose the exact cables you need while providing a clean singular header for the GPU. It’s also worth noting that the 16-pin CPU cable is right-angled, making it much easier to install while preventing cable wear as it doesn’t need to be bent as much.

The main weakness of this power supply is its price. Much like the Corsair RM750X, this is a premium power supply, but the GX III 750W is also somewhat more challenging to secure, increasing its price a bit more.

Frequently Asked Questions

Do I Need a 16-Pin GPU Cable?

While the 16-pin GPU cable isn’t required, it will make building much easier and cleaner as you won’t need to use the pesky adapters supplied with the cards.

Should I Future Proof My Build With a Higher Wattage?

While this can be useful if you plan on upgrading fairly soon, we recommend sticking to the recommended wattage or slightly higher if you have a powerful CPU.

Is Efficiency Important?

It can be helpful if your build draws a lot of power, but the vast majority of modern power supplies will be efficient and designed to minimise excess power output.