Best PSU for AMD Ryzen 9 7950X3D? Let’s find out
Updated: 21 February 2023 at 11:21 am

The long-awaited release of the Ryzen 9 7950X3D is finally just around the corner. AMD’s next flagship gaming processor will hit the market on February 28. Let’s talk about the best PSU for AMD Ryzen 9 7950X3D.
Read now: Best PSU for Ryzen 9 7900X3D
Best PSU for AMD Ryzen 9 7950X3D
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Best PSU for AMD Ryzen 9 7950X3D
MSI MPG A1000

MSI MPG A1000G
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Runner up PSU for AMD Ryzen 9 7950X3D
Corsair RM850x

Corsair RM850x
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Wildcard
ASUS ROG Thor 1000W Platinum II

ASUS ROG Thor 1000W Platinum II
How much power does the Ryzen 9 7950X3D need?
The Ryzen 9 7950X3D needs a surprisingly low TDP of 120 watts, which basically means it uses 120 watts of power under full load. It’s incredibly power efficient, especially for a flagship processor.
To give you a little more perspective, the 7950X (non-3D) has a TDP of 170 watts, and the Intel i9-13900KS, the direct competitor of the 7950X3D, can consume as much as 320 watts of power under full load.
The 7950X3D’s relatively low power consumption gives you a few more options when choosing a PSU. But it’s important to understand that the bulk of a computer’s power consumption belongs to the GPU, not the CPU.
The 7950X3D is powerful enough that you can easily pair it with any GPU out there. Most users who choose this processor will probably be looking to pair it with an RTX 4090 to create the ultimate gaming rig.
The 4090 has a massive TDP of 450 watts. This is something to consider when choosing a PSU.
Do I need a new power supply for the 7950X3D?
The 7950X3D itself does not need much power. It really depends on the GPU you choose to pair it with. If you pair it with a low-power GPU like the 130-watt RTX 3050, you can get away with using an older, weaker power supply.
But the thing is, pairing the 7950X3D with something as weak as an RTX 3050 would be a huge waste of resources.
This ~$800 processor should really only be used with the very strongest cards available today, such as the RTX 4090 and RX 7900 XTX. Such cards have a TDP closer to 400 watts, so an older power supply will probably not be sufficient.
Ultimately it comes down to the amperage of your PSU and whether it is sufficient for your build.
There’s also the fact that older PSUs tend not to have the multiple 8-pin and 12-pin power connectors required by modern GPUs, so you have to resort to using third-party adapters, which is extremely dangerous and highly inadvisable .
What goes into choosing a power supply?
- Watts: Your PSU should have enough watts to supply the PC build with its maximum theoretical power needs and then some. It is recommended to have 20 to 30% ceiling height.
- Efficiency: The more efficient a PSU is, the less heat it produces and the quieter it runs. You also save energy and pay lower electricity bills for your computer use. Power supplies are rated according to their efficiency.
- Modularity: Modular PSUs allow you to disconnect the power cables from the main brick. You can keep the ones you need and remove everything else to end up with less internal clutter. It’s best to have a modular or at least semi-modular PSU these days.
Best PSU for Ryzen 9 7950X3D
The PSU we recommend for the Ryzen 9 7950X3D is the MSI MPG A1000G.
MSI MPG A1000G
The MSI MPG A1000G is a powerful, fully modular 1000-watt PSU capable of supplying modern flagships with all the power they need.
It is perfect for a PC build with a 7950X3D. Whichever GPU you choose to go with this build, the MPG A1000G will suffice. It is equipped with the latest 12-pin power connectors.
The PSU is 80+ Gold certified. It’s not the best standard we have today (that would be 80+ Platinum), but it’s still very respectable. The actual efficiency of this power supply during operation varies from 87 to 90%, depending on the load.
The MPG A1000G has a Zero Fan mode for quieter operation, and even when the fan is running, it doesn’t make much noise.
MSI is known for its reliability and offers you a 10-year warranty to guarantee long-term functionality.