Best Power Supply for RTX 3070 [650W Recommended!]

PSU Tier List

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Nvidia have officially announced the new 3070 series Ampere Graphics cards and with that come new Power Supply requirements.

TL;DR – Best PSU’s for Nvidia RTX 3070

Can’t be bothered to read below? No worries, these are the PSU’s we suggest;

NameForm FactorPrice
be quiet! | Dark Power Pro 11ATXPrice not available
Cooler Master | V PlatinumATXPrice not available
Corsair | HX PlatinumATX$145.75
SilverStone |SFX-L, TitaniumSFX-L$200.99
Corsair | SF750SFX$188.99
Recommendations based on Geforce RTX 3070 Founders Edition Specifications

What you need to know about the power requirements of the RTX 3070

If you are a more budget gamer, or simply don’t intend on pushing out huge numbers of pixels then a 3070 may be a more wallet friendly graphics card choice for 1080p and 1440p gaming.

The current “low” end GPU from the new Ampere lineup sits below the 3080 but still improves massively on performance when compared the previous generation cards.

Having said that, the power requirements are still fairly extreme, with Nvidia themselves recommending at least 650 Watts.

Geforce RTX 3070 Full Specs

Let’s take a look at the full specs for the RTX 3070.

GPU Engine Specs:NVIDIA CUDA® Cores5888
Boost Clock (GHz)1.73
Base Clock (GHz)1.50
Memory Specs:Standard Memory Config8 GB GDDR6
Memory Interface Width256-bit
Technology Support:Ray Tracing Cores2nd Generation
Tensor Cores3rd Generation
NVIDIA ArchitectureAmpere
Microsoft DirectX® 12 UltimateYes
PCI Express Gen 4Yes
NVIDIA® GeForce ExperienceYes
NVIDIA FreeStyleYes
NVIDIA ShadowPlayYes
NVIDIA HighlightsYes
Game Ready DriversYes
NVIDIA Studio DriversYes
Vulkan RT API, OpenGL 4.6Yes
HDMI 2.1Yes
DisplayPort 1.4aYes
NVIDIA Encoder7th Generation
NVIDIA Decoder5th Generation
VR ReadyYes
Display Support:Maximum Digital Resolution (1)7680×4320
Standard Display ConnectorsHDMI 2.1, 3x DisplayPort 1.4a
Multi Monitor4
Founders Edition Card Dimensions:Length9.5″ (242 mm)
Width4.4″ (112 mm)
Founders Edition Thermal Power Specs:Maximum GPU Temperature (in C)93
Graphics Card Power (W)220
Required System Power (W) (2)650
Supplementary Power Connectors1x PCIe 8-pin
(adapter to 1x 12-pin included)

Geforce RTX 30700 Power Supply Requirement

We’ve seen the full spec list above, but let’s focus now on the Power Specs, specifically what size PSU you need for a RTX 3070.

Founders Edition Thermal Power Specs:Maximum GPU Temperature (in C)93
Graphics Card Power (W)220
Required System Power (W) (2)650
Supplementary Power Connectors1x PCIe 8-pin
(adapter to 1x 12-pin included)

That’s right a 650W Power Supply is the required power supply for a low end card in 2020!

But wait, don’t toss aside your existing power supply just yet, let’s dive in a little deeper to what (2) is all about..

Recommendation is made based on PC configured with an Intel Core i9-10900K processor. A lower power rating may work depending on system configuration.


So that’s using a super high end (and a little toasty) Intel Core i9-10900k, which is unlikely to be the CPU of choice for a more budget oriented gaming build.

If you go for a lower power drawing i3 or i5, or more likely a Ryzen 3,000 or 4,000 it’s likely that you’d get away with a lesser power supply.

However, for the purpose of our recommendations we are only recommending 650+ w cards to ensure comparability.

Best Power Supplies for Nvidia Geforce RTX 3070

The power supplies listed below are primarily based from listings in our PSU tier list.

Best ATX Power Supply for Nvidia Geforce RTX 3070

Below we list the best full sized ATX PSU’s suitable for the Nvidia Geforce RTX 3070

be quiet! | Dark Power Pro 11 | link

be quiet! Dark Power Pro 11 750W, BN652, Modular, 80 Plus Platinum, Power Supply
  • 80Plus PLATINUM efficiency (up to 94%) and unmatched power stability
  • Virtually inaudible silent Wings 3 135mm fan with fluid-dynamic bearing
  • 6-Pole fan motor and IC motor control for smooth low-speed operation and reduced noise
  • Large funnel-shaped fan intake facilitates high airflow with less turbulence
  • Overclocking key switches between four 12V-rails and ONE MASSIVE 12V-rail

Cooler Master | V Platinum| link

Cooler Master V-Series V1300 1300W Alimentatore 80+ Platinum Modular 135mm Ventilatore
  • 80 PLUS Platinum Certified This certification guarantees a typical efficiency of 92% under normal operating conditions.
  • Thermal Regulation Mode (TRM) : TRM regulates the temperature of the PSU by keeping a constant and quiet fan speed up to 60% of maximum load.
  • Performance Driven Topology : The full-bridge LLC resonant converter and DC-DC technology offer reliable and stable voltage outputs for safer, more reliable performance and higher efficiency.
  • Single/Multi-Rail Switch : Built in rail switch allows users to change between multi and single rail power output settings.
  • 16 AWG PCI-e Cables : The thicker 16 AWG PCI-e cables allow for higher currents, thereby improving both efficiency and safety.

Corsair | HX Platinum | link

CORSAIR HX Series, HX850, 850 Watt, 80+ Platinum Certified, Fully Modular Power Supply
  • 80 plus Platinum runs cooler and uses less power than less efficient power supplies
  • Fully modular allows user to only use the cables they need for a cleaner looking build with better airflow
  • 10-Year Backed by CORSAIR legendary technical support and customer service
  • 135mm FDB fan with Zero RPM mode virtually silent operation at low loads
  • plus12V rail switch gives the user The choice of a single plus12V rail or multiple plus12V rails

Best SFX-L Power Supply for Nvidia Geforce RTX 3070

Below we’ve listed the best SFX-L PSU suitable for the Nvidia Geforce RTX 3070

SilverStone |SFX-L, 80 Plus Titanium | link

SilverStone Technology 800W SFX-L, 80 Plus Titanium 100% Modular Power Supply with Japanese Capacitors SX800-LTI-USA, SST-SX800-LTI-USA
  • 800W Continuous power output rated for 24/7 operation. Class-leading single +12V rail with 66a. Strict 3% Voltage regulation and low ripple & noise
  • High quality construction with all Japanese Capacitors
  • High efficiency with 80 PLUS Titanium certification
  • Silent running 120mm fan with advanced semi-fan less operation. Support Quad PCI-E 8/6pin connectors
  • 100% modular short cables with flexible flat arrays. Sfx-l form Factor for use in small form Factor computers

Best SFX Power Supply for Nvidia Geforce RTX 3070

Below we’ve listed the best SFX PSU suitable for the Nvidia Geforce RTX 3070.

Corsair | SF Series, SF750, 750 Watt, SFX, 80+ Platinum link

Corsair SF Series, SF750, 750 Watt, SFX, 80+ Platinum Certified, Fully Modular Power Supply (CP-9020186-NA)
  • Harness 750 continuous watts In SFX form, perfect for the most power-dense small-form-factor PCs
  • Ensures ultra-high efficiency operation for less excess heat and lower operating costs
  • Flexible Para cord sleeved cables make routing and cable management incredibly easy


So there you have it, a new series of GPU’s and a shopping list of power supplies to power them.

If you think we’ve missed the best psu for RTX 3070 please let us know in the comments below and we’ll update our list.

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