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Best PSU for RTX 3070

Despite the 40-series and subsequent Super refresh clearly outperforming this card, the RTX 3070 can still perform very well, even with the latest releases.

Of course, the main benefit of buying a graphics card that’s no longer the new hotness is that you can buy it and afford rent the same month. Unreal financial techniques.

So, given that the RTX 3070’s price point is only going to get more and more accessible, we thought we’d go over some of the best PSUs to go with it. Let’s take a look at some options from the considerably broad range of options from CORSAIR.

RTX 3070 SYSTEM REQUIREMENTS

  • PCIe 4.0 x16 Slot (For best performance)
  • 650W power supply or greater
  • 1x PCIe 8-pin
    (adapter to 1x 12-pin included)

RTX 3070 Power requirements

As with the 3080, 4080, and pretty much any of NVIDIA’s GPUs, the power draw of the cards varies depending on which brand is making it. So, here’s a list of some of the most common RTX 3070 cards and their officially recommended minimum wattages.

Model TDP (Thermal Design Power) Minimum recommended PSU
NVIDIA GeForce RTX 3070 (Founder's Edition) 220W 650W
EVGA NVIDIA GeForce RTX 3070 8GB XC3 ULTRA 220W 650W
MSI NVIDIA GeForce RTX 3070 8GB SUPRIM X 280W 650W
GIGABYTE AORUS RTX 3070 MASTER 220W 650W
GIGABYTE Eagle GeForce RTX 3070 220W 650W
ASUS TUF Gaming GeForce RTX 3070 V2 OC Edition 220W 750W
ASUS ROG Strix GeForce RTX 3070 V2 OC 220W 750W
ASUS KO GeForce RTX 3070 220W 750W

Please note that this list is not exhaustive, so if you don’t see your specific model of 3070 in there, check the manual or the manufacturer’s website to make sure you’re configuring your system correctly. We’re actually going to go with PSUs that are slightly over-powered for the RTX 3070, as the additional headroom means that you’ll be able to upgrade your system a few times without necessarily having to upgrade the PSU. Additionally, it means that the PSU won’t have to work as hard to power the system, which is nicer for thermals. We will include a 650W option at the bottom of the page for those who are less concerned about upgradability.

Best fully modular ATX PSU for RTX 3070: CORSAIR RM750x SHIFT

If we’re talking modular PSUs, then the RM750x SHIFT is the correct answer here. Fully modular cables mean that you only have to manage what you need, and the way that they’re side-mounted makes cable runs even more direct. The RM750x SHIFT is also 80 PLUS gold and Cybenetics gold-rated for efficiency, and scores an A from Cybenetics in their noise levels testing too.

RM750x_SHIFT_07 (1)
RM750x_SHIFT_09 (1)

CORSAIR RM750x SHIFT specs

Those who really want to get deep with PSUs will want to have a gander at the power table and the cable configuration. We’ll include these specs for the other PSUs we recommend too.

CORSAIR RM750x SHIFT Power Table

Rail +3.3V +5V +12V +5Vsb
Max Current 20A 20A 62.5A 3A
Max Combined Wattage

150W 750W 150W
750W

CORSAIR RM750x SHIFT Cable Configuration

Cable Type Description Length Cable Quantity
Sleeved ATX Cable (24-pin) 610mm ± 10mm 1
Flat EPS / ATX 12V 8-pin (4+4) 610mm ± 10mm 2
Flat 12VHPWR (12+4) pin 610mm ± 10mm 1
Flat

PCIe 8-pin (6+2) (6+2)

750mm ± 10mm 1
Flat

PCIe 8-pin (6+2)

610mm ± 10mm 1
Flat

SATA (4 SATA)

800mm ± 10mm 3
Flat

PATA (4-pin)

750mm ± 10mm 1

Best fully modular SFX PSU for RTX 3070: CORSAIR SF850L

With small form factor PCs continuing to grow in popularity, it’s worth taking a look at a fully modular SFX PSU for the RTX 3070, too. The CORSAIR SF850L is the best choice for those after a compact PC. It’s fully modular and is far more compact so you won’t have to worry about squeezing it into small cases.

SF850L_RENDER_02
SF850L_RENDER_06

CORSAIR SF850L Power Table

Rail +3.3V +5V +12V +5Vsb
Max current 20A 20A 70.8A 3A
Max combined wattage 150W 850W 15W

850W

CORSAIR SF850L Cable Configuration

Cable type Description Length Cable Quantity
Sleeved ATX CABLE 24-Pin (24) 300mm ± 10mm 1
Flat EPS/ATX12V CABLE 8-Pin (4+4) 400mm ± 10mm 2
Flat 12VHPWR Cable (12+4) 400mm ± 10mm 1
Flat PCIe 8-pin (6+2) (6+2) 500mm ± 10mm 1
Flat PCIe 8-pin (6+2) 400mm ± 10mm 2
Flat SATA (4 SATA - Straight) 445mm ± 10mm 1
Flat SATA (4 SATA - Right-angled) 445mm ± 10mm 1
Flat PATA (4-pin) 330mm ± 10mm 1

Best ultra-quiet PSU for RTX 3070: CORSAIR RM750e

But what if you don’t care about size, or side-mounted connectors? What if you just want a PSU that just gets the job done, allowing you to concentrate on the important things in life. Like Counter-Strike 2 and YouTube videos.

If that’s the case, then the CORSAIR RM750e is the top choice here. It’s modular of course, but the main feature is how whisper quiet it is. If you’re the type who like to entirely forget there’s a PC in the room, this is how you do that.

RM750e_03
RM750e_07

CORSAIR RM750e Power Table

Rail +3.3V +5V +12V +5Vsb
Max current 20A 20A 62.5A 3A
Max Combined wattage 110W 750W 15W
750W

CORSAIR RM750e Cable Configuration

Cable type Description Length Cable quantity
Sleeved ATX Cable (24-PIN) 610mm ± 10mm 1
Flat EPS / ATX 12V 8-Pin (4+4) 650mm ± 10mm 2
Flat 12VHPWR (12+4) Pin 650mm ± 10mm 1
Flat PCIe 8-Pin (6+2) 650mm ± 10mm 1
Flat PCIe 8-Pin (6+2) (6+2) 750mm ± 10mm 1
Flat SATA (3 SATA) Straight 800mm ± 10mm 1
Flat SATA (4 SATA) Right Angle 800mm ± 10mm 1
Flat PATA (4-Pin) 750mm ± 10mm 1

Best 650W PSU for RTX 3070: CORSAIR RM650

If you only upgrade your PC sparingly, or you like living life closer to the edge, then a 650W PSU will still be ok. We’d be remiss if we didn’t include one, so we’re going with the CORSAIR RM650. It’s fully modular still, despite its sub $100 price point and it’s a touch more compact than most ATX PSUs.

RM650_02
RM650_05

CORSAIR RM650 Power Table

Rail +3.3V +5V +12V -12V +5VSB
Max Current 20A 20A 54A 0.3A 3A
Max combined wattage 110W 650W 3.6W 12W
650W

CORSAIR RM650 Cable Configuration

Cable type Description Length Cable Quantity
Sleeved ATX CABLE 24-PIN (24) 610mm ± 10mm 1
Flat EPS/ATX12V CABLE 8-PIN (4+4) 600mm ± 10mm 2
Flat PCIe 8-pin (6+2) (6+2) 750mm ± 10mm 1
Flat SATA (3 SATA - Straight) 700mm ± 10mm 1
Flat SATA (4 SATA - Right angled) 800mm ± 10mm 1
Flat PATA (4-pin) 750mm ± 10mm 1

Try Our Power Supply Calculator

Still not sure which power supply is right for you? Why not try out our Power Supply Calculator. Just choose your components and we will calculate the best PSU for your specific pc setup.

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