Best PSU for AMD Ryzen 7 7700X and GeForce RTX 4080

The AMD Ryzen 7 7700X and GeForce RTX 4080 are two of the most powerful processors and graphics cards on the market, respectively. Combining these two components together in the same system can create an incredibly powerful machine that can be used for gaming, video editing, or even running advanced AI algorithms. But in order to harness the full potential of these components, you’ll need to find the right power supply unit (PSU). Choosing the best PSU for your system is important for reliable operation and maximum longevity. In this article, we’ll discuss what to look for when choosing a PSU for your AMD Ryzen 7 7700X and GeForce RTX 4080 setup. The AMD Ryzen 7 7700X has a TDP of 105W and the GeForce RTX 4080 has a TGP of 320W, making a total of 425W. That means that you’ll need to find a PSU with at least 650W of power output. We have reviewed and tested latest PSUs, and below are top recommended ones for AMD Ryzen 7 7700X and GeForce RTX 4080 combo:

1. Corsair RM850x Shift Fully Modular ATX Power Supply – Check Price at Amazon/Newegg

 

CORSAIR RM850x SHIFT fully modular power supply is currently best PSU for AMD Ryzen 7 7700X and RTX 4080 combo. It boasts a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.

CORSAIR RM850x Shift Fully Modular ATX Power Supply Features:

• Fully Modular Micro-Fit PSU Connectors: CORSAIR Type 5 Gen 1 micro-fit PSU cables mean you only connect the cables your system needs while taking up less space.
• Intel ATX 3.0 Certified: Compliant with the ATX 3.0 power standard, supporting the PCIe Gen 5 platform and resisting transient power spikes.
• Zero RPM Fan Mode Support: At low and medium loads the cooling fan switches off entirely for near-silent operation.
• 100% 105°C-Rated Japanese Electrolytic Capacitors: Premium internal components deliver unwavering power delivery and long-term reliability.
• Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.

Pros:	Cons:
High build quality Innovative Easy-Access Connection Position PCIe 5.0 Fully modular 10-year warranty	None yet

2. MSI MPG A850G PCIE5 850W 80 PLUS Gold Modular Power Supply – Check Price at Amazon/B&H Photo Video/Newegg

The MSI MPG A850G PCIE5 850W 80 PLUS Gold Modular Power Supply is a compact and powerful power supply unit that delivers 80 Plus Gold efficiency and full-modular cabling, is another great 850W PSU for AMD Ryzen 7 7700X and GeForce RTX 4080. It is an excellent product for anyone looking for reliable, high-quality power. It is a modular design, which allows for convenient cable management and easier installation. It has an 80 Plus Gold certification, meaning that it is highly efficient and will save you money in the long run. The 850W is more than enough to power most gaming systems and PCs, while the inclusion of 1 x 16-Pin connectors means that it can easily power many high-end GPUs. Additionally, the integrated OCP, OVP, UVP, and SCP protections ensure that your system will run safely and efficiently. Overall, this power supply is sure to satisfy all your power requirements and provide you with plenty of stable and efficient power.

MSI MPG A850G PCIE5 850W 80 PLUS Gold Modular Power Supply Features:

• 850W Single +12V Rail
• 135mm Cooling Fan
• Intel ATX12V Version 3.0
• 1 x 16-Pin Connector
• 6 x PCI-E Connectors
• 8 x SATA Connectors
• 4 x 4-Pin Connectors
• Flat, Sleeved Cables
• 80 PLUS Gold Efficiency Rating

Pros:	Cons:
Delivered full power at 47°C Fluid dynamic bearing fan Low vampire power consumption High power factor Tight +12V load regulation Good ripple suppression Decent transient response High number of connectors and cables 10-year warranty	Not competitive overall performance Low efficiency under light and super light loads Not so quiet operation High inrush current with 230V input

3. Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply – Check Price at Amazon

 

The Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply is another best selling PSU for Ryzen 7 7700X and GeForce RTX 4080 combo. CORSAIR RMe Series Fully Modular Low-Noise Power Supplies provide quiet, reliable power with 80 PLUS Gold efficiency to your PC. With ATX 3.0 and PCIe 5.0 compliance and an array of PCIe 8-pin power connectors, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance, backed by a seven-year warranty. Wake your computer faster and consume less power with support for the new Modern Standby sleep mode. Fully modular cables make PC builds easy, as you connect only the cables your system requires. With a 140mm-long casing that works with nearly any modern case, the CORSAIR RMe Series is steady power for your system.

Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply Features:

• Fully Modular PSU: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
• Intel ATX 3.0 Certified: Compliant with the ATX 3.0 power standard, supporting the PCIe Gen 5 platform and resisting transient power spikes.
• Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
• 105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
• Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.

Pros:	Cons:
Delivered full power at 47°C High overall performance Quiet operation Modular cables Fully compliant with ATX 3.0 Quality fan – low noise with high airflow Loads of cables and connectors Fully modular	Needs a small average efficiency boost Small distance between peripheral connectors

4. Corsair SF Series SF750 750W 80 PLUS Platinum Modular PSU – Check Price at Amazon/B&H Photo Video/Newegg

If you are looking for a 750W PSU, the Corsair SF Series SF750 750W 80 PLUS Platinum Modular PSU is currently best 750W PSU choice for AMD Ryzen 7 7700X and GeForce RTX 4080. It delivers 80 Plus Platinum efficiency and 750W of output in a compact SFX form factor. It is ideal for small-form-factor builds that require high performance and reliability. It has a 92mm rifle bearing fan that operates quietly and a 7-year warranty that ensures durability. It is capable of supporting a very strong system with power-hungry components, such as multiple GPUs and overclocked CPUs. It has 100% Japanese capacitors and 16AWG PCIe high-quality cables that ensure stability and longevity. It also has a zero RPM fan mode that only activates the fan when needed. Overall, the SF750 is a great option for anyone looking for a small and powerful PSU that can support a variety of systems. It has some minor drawbacks, but they are overshadowed by its many strengths. It is a well-made and well-performing product from Corsair.

Corsair SF Series SF750 750W 80 PLUS Platinum Modular PSU Features:

• 750W Single +12V Rail
• 92mm Cooling Fan
• Intel ATX12V Version 2.4
• 4 x PCIe Connectors
• 8 x SATA Connectors
• 3 4-Pin Connectors
• Individually Sleeved Cables
• SFX-to-ATX Adapter Included
• Supports Multiple GPUs
• Zero RPM Mode

Pros:	Cons:
80 PLUS Platinum Extremely high power density Resiliently high operating temperatures Tight load regulation High overall performance Fully modular 2x EPS & 4x PCIe Ripple suppression is first class Great build quality 105c rated capacitors throughout	Expensive Cables are intentionally quite short

5. ASUS TUF Gaming 750W Gold Fully Modular Power Supply – Check Price at Amazon/B&H Photo Video/Newegg

The ASUS TUF Gaming 750W Gold Fully Modular PSU is another great 750W PSU for AMD Ryzen 7 7700X and GeForce RTX 4080. The TUF Gaming Gold PSU series is your companion in battle. Offering premium specs such as ATX 3.0, fully modular, and 80+ Gold Certification, this powerhouse of a PSU will power your dream PC. Backed by a 10-year warranty, the TUF Gaming Gold power supply will be the start of your gaming journey.

ASUS TUF Gaming 750W Gold Fully Modular PSU Features:

• Capacitors and chokes pass demanding tests to achieve Military-grade Certification.
• Dual ball fan bearings can last up to twice as long as sleeve bearing designs.
• A protective PCB coating protects against moisture, dust, and extreme temperatures.
• An 80 Plus Gold Certification is the result of Japanese capacitors and other premium components.
• ATX 3.0 Compatible: TUF Gaming Gold is compliant with ATX 3.0 guidelines and bundled with a 16-pin PCIe cable that can pipe up to 600W of power to PCIe Gen 5.0 graphics cards.
• Axial-tech fan design features a smaller fan hub that facilitates longer blades and a barrier ring that increases downward air pressure.
• Fully modular etched cables keep your rig neat and tidy.
• 10-year warranty included.

Pros:	Cons:
High power efficiency rating of up to 90% Certified to meet stringent industry standards for safety and performance Great build quality Quiet and intelligent fan ATX 3.0 PCIe Gen 5.0 10-year warranty Fully modular	Nothing yet