Best PSU for RTX 4070 in 2023 – top PSUs for gaming

We’ve searched high and low to find the best PSU for RTX 4070.

If you’ve copped yourself Nvidia’s latest edition to the 40-series family, you might be checking whether your PSU is suitable to support the new graphics card. The good news is that the TDP is fairly inoffensive, using a fraction of the power consumption compared to the RTX 4070 Ti, and the other 40 series cards. If you have a PSU of 600W or higher, you’ll be fine. However, if you are in need of an upgrade, we’ve got you covered.

We’ve selected these PSUs based on their price, quality and efficiency. These PSUs from Corsair, Seasonic and Cooler Master all boast a Gold efficiency rating, and will compliment the RTX 4070, helping you build an excellent mid-range PC.

We’ll be discussing the most important features of each PSU and weigh up their strengths and weaknesses. In particular, we’ve put a special emphasis on cable management so you can install your PSU with ease.

So, let’s jump to it – here are the best PSUs for RTX 4070.

Best overall PSU for RTX 4070 – Corsair RM750X

So if you just want the quickest and easiest answer to the ‘which PSU should I get for my RTX 4070?’, the simple answer is this Corsair offering.

With full modularity, two EPS connectors, and four PCIe connectors, it’s perfect for GPUs with exceptional power requirements.

It also happens to have 80 Plus Gold certification, meaning that it consumes less power while keeping noise and temperature levels significantly lower than you might find with cheaper power supplies. 

And that’s not just while the PC is idling, either. The RM750X is optimised to be as quiet as possible, even while under strain, so you can expect peace during your most intense gaming sessions. It’s rated for 100,000 MTBF hours, too, so you can rest assured that you’ll get value for money in terms of its lifespan and reliability. 

Another nice feature is the fact that – when the PC is running well under load – the RM750X has a zero RPM fan mode, meaning that it delivers near-silent operation while you’re doing less-intensive tasks.

Plus, with full modularity, you’ll be able to tailor it to suit your PC’s needs, meaning that you can leave out the cables you don’t need, and making cable management significantly easier. Speaking of cables, it might be worth replacing your HDMI and DisplayPort cables ahead of installing your new PSU.

Constructed using industrial grade Japanese capacitors, it really is a wonderful PSU and one we’d heartily recommend to anyone looking to build a new PC with an RTX 4070. Corsair is known for its fantastic power supplies, and this is no exception, so make sure to check it out today!

Best power efficient PSU for RTX 4070 – Seasonic FOCUS Plus Platinum 750W

With today’s cost-of-living, it’s always good to be as mindful as possible of how much our favourite appliances (i.e. gaming rigs!) are using. Plus, it’s good to be kinder to mother earth, too. If that sounds like you, the Seasonic FOCUS Plus 750W could be the perfect PSU, with platinum 80 plus certification and full modularity.

One of the really cool design features we didn’t expect to find with this PSU was the compact size. It measures 140mm deep, which makes it one of the few smaller PSUs capable of delivering 750W while still maintaining high power efficiency.

The size factor also makes it ideal for any of you who might be looking for a PSU for a powerful miniature gaming rig, especially if you’re going for anything less than a Micro-ATX case size and need to ensure that you’re staying within the space provided.

Plus, full modularity means that you can use only the cables needed, which is again not only great for cable management but also for assisting effective airflow throughout your system.

The FOCUS Plus Platinum also comes with Hybrid Silent Fan Control, which provides an advanced three-phased thermal control mechanism to provide the optimum balance between silence and cooling (in total, it has three modes: fanless, silent, and cooling), making it perfect for what might be otherwise noisy gaming PCs.

This is an absolutely incredible compact PSU, and one with no real compromises at all. It also delivers in terms of its power consumption, making it the perfect choice for green gamers or just those of you who are conscious of your electricity bills!

The Seasonic FOCUS Plus is available now, and well worth checking out.

Best budget PSU for RTX 4070 – Cooler Master MWE Gold 850 V2

If you’ve spent the vast majority of your budget on picking up an RTX 4070 itself, then you might have found yourself in the slightly unfortunate position of not having much left over to invest in a new PSU. Fear not, though, as we’ve managed to find a fantastic option for you in Cooler Master’s MWE Gold 850.

What makes this such a special PSU is the fact that it’s being sold for a relatively low price, despite the fact that it’s capable of providing 850W of power. Although it doesn’t have the power efficiency of Seasonic’s offering above, this is still a beefy gaming PSU that will provide more than enough juice for an RTX 4070.

The MWE Gold utilises 2 EPS connectors, meaning that it maintains full compatibility with any current-generation motherboard. Plus, with high temperature resilience, you can rest assured that it will maintain reliable operation during even the most intense gaming sessions since it can continue running up to a maximum of 50 degrees Celsius.

As with the two other options on this list, this is a fully modular PSU, so you can tailor the cables to suit your needs and only connect the ones you need. For a budget PSU with this much power, we’re actually surprised that it didn’t have semi-modular cabling, which would make cable management notably more difficult.

And, with a hydro dynamic 120mm fan, you can expect less friction, smooth RPM, and low noise levels, too. For a budget option, this really does pack a hell of a punch, and it’s a PSU we’d recommend to any budget-conscious gamer who’s hell-bent on picking up an RTX 4070!

Frequently asked questions

We understand you might have some questions about the best PSU for the RTX 4070 – we’ve tried to answer some of them here.

What wattage PSU do you need for RTX 4070?

The 4070 has a rating of 200W – meaning you’ll need a PSU of at least 600W. We recommend accommodating a bit of headroom given that you want your PC build to last for up to a decade.

Do you need an ATX 3.0 PSU for RTX 4070?

It should come as good news that you do not need an ATX 3.0 PSU for the RTX 4070 – these PSUs feature an additional 16-pin 12VHPWR connector that allows up to 600W power delivery to a graphics card. You only really need this for the 4090 and future generations.