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Coming with 6144 streaming processors and 2499 MHz of boost clock speed, the RX 7900 XTX is one of the best gaming graphics card from AMD. It packs exceptional performance and offers great value for money, making it the perfect choice for gamers. With a TDP of 355W, AMD recommends at least an 800W PSU to go along with the RX 7900 XTX. Therefore, if your old PSU is below said wattage, then you should definitely consider upgrading just to be on the safe side. In this guide, I will walk you through several best power supplies for the RX 7900 XTX.
Well, take a look at my recommendations for the best PSU for RX 7900 XTX compared with each other:
Last Updated:
- September 9, 2024: After testing several more PSUs, we have picked the XPG CyberCore II 1000 and the Corsair SF1000L as some of the top choices for RX 7900 XTX.
Make sure to check our PSU Watts Calculator – a dedicated tool to help you find the right power supply for your build.
Best PSU for RX 7900 XTX
Following are the best PSU for RX 7900 XTX:
- Best Overall: XPG CyberCore II 1000
- Best ATX 3.0: Seasonic Vertex GX-1000
- Best Budget: Corsair RM850e
- Best Compact: Corsair SF1000L
- Best Value: MSI A1000G PCIE5
XPG CyberCore II 1000
Best Overall PSU For RX 7900 XTX
Specifications: Size: 160 x 150 x 86mm | Efficiency Rating: 80+ Platinum | Modular: Yes (Fully) | Wattage: 1,000W | Protection: OPP, OVP, UVP, OCP, OTP, SCP, NLO, SIP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12VHPWR Cable: 1 | PCI-E 6+2-Pin: 6 | SATA: 8 | MOLEX 4-Pin: 4
Pros
- Very efficient
- Silent fans
- Plenty of SATA connectors
- Long cables
- Impressive pricing
Cons
- Hard sleeved cables
- No Hybrid Fan mode
When looking to purchase a power supply for the RX 7900 XTX, the sweet spot is around 1,000W. Seeing that, the XPG CyberCore II 1,000W PSU is a perfect mixture of features and pricing. It features an 80+ Platinum rating, plenty of connectors, and is fully modular. I also love the power supply’s low pricing, making it even more attractive for the RX 7900 XTX GPU. Although ATX 3.0 isn’t a requirement for the graphics card, it’ll ensure future-proofing for your next GPU upgrade.
As I mentioned earlier, one of the XPG CyberCore II PSU’s most attractive features is its numerous connectors. For example, you get 8 SATA, 6 PCI-E 6+2, and 4 MOLEX 4-pin connectors to power everything your PC needs. The PSU is also extremely efficient. At 100% load, it had a 16mV voltage ripple during our testing, allowing outstanding overclocking opportunities with the RX 7900 XTX. Implementing digital controllers also helps make it more efficient at higher loads.
Abdul Hannan, one of our hardware testers, was wowed by the power supply’s impressive load regulation and efficiency. This is what he commented while reviewing the product:
XPG CyberCore II 1000W is a reliable choice for modern PC builders and gamers like myself. Its efficiency and adherence to Intel’s ATX 3.0 design guide ensure compatibility with the latest hardware while delivering stable power output, which is crucial for smooth performance during intense gaming sessions or demanding workloads.
What Makes It The Best Overall PSU For RX 7900 XTX?
The XPG CyberCore II 1,000W power supply offers value and performance thanks to its high build quality, silent fans, loads of connectors, and impressive efficiency ratings. With a lower voltage ripple, it’s also ideal for greater overclocking possibilities, making it the best overall PSU for the RTX 7900 XTX GPU.
The XPG CyberCore II 1000 power supply is one of my favorites because there’s almost nothing to dislike about this PC component. It works well, is super efficient, allows extreme overclocking even with flagship CPUs and GPUs, has plenty of connectors, and comes with silent fans. You can’t go wrong with this power supply.
– Nauman Siddique
| Performance: 8/10 | Value: 9/10 |
| Features: 8/10 | Efficiency: 9/10 |
Seasonic Vertex GX-1000
Best ATX 3.0 PSU For RX 7900 XTX
Form Factor: ATX | Wattage: 1000W | Efficiency Rating: 80 PLUS Gold | Modularity: Full Modular | ATX 3.0: Yes
Pros
- Future-proof
- Japanese Capacitors
- High Capacity
- Durable
Cons
- Expensive
First off, the power supply is ATX 3.0 compatible, meaning that it has an additional 12VHPWR cable that can provide up to 600W of power. One thing about the RX 7900 XTX and the rest of the Radeon 7000-series graphics cards is that they are not ATX 3.0 compatible, unlike NVIDIA’s RTX 4000-series. However, getting an ATX 3.0 compatible PSU is really good for future-proofing. Furthermore, the Seasonic Vertex GX-1000 has nailed the efficiency rating admirably with its 80 PLUS Gold certification.
Looking inside the PSU, the Seasonic Vertex GX-1000 uses the well-known Japanese 105°C Aluminum Capacitors. Japan knows how to make the most reliable and durable capacitors, and that’s why their capacitors are considered the benchmark for reliability. The Seasonic Vertex GX-1000 also relies on a 135mm Fluid Dynamic Bearing (FDB) fan for cooling. An FDB fan generates less heat and noise when compared to a conventional ball-bearing fan. Furthermore, it also consumes less power while providing optimal cooling.
What Makes It The Best ATX 3.0 PSU For RX 7900 XTX?
You can get other ATX 3.0 power supplies in this budget as well. But none of them feature the reliability, durability, and support of Seasonic, and that’s what makes the Seasonic Vertex GX-1000 the Best ATX 3.0 PSU For RX 7900 XTX.
| Performance: 9/10 | Value: 8/10 |
| Features: 8/10 | Efficiency: 8.5/10 |
Corsair RM850e
Best Budget PSU For RX 7900 XTX
Form Factor: ATX | Wattage: 850W | Efficiency Rating: 80 PLUS Gold | Modularity: Full Modular | ATX 3.0: No
Pros
- Very Affordable
- ATX 3.0
- Solid Performance
Cons
- No 12VHPWR native connector
- A Bit Noisy
Since the RX 7900 XTX has a recommended wattage of 800W, the minimum best PSU for it should have a wattage capacity of 850W. Hence, with the Corsair RM850e, you won’t have any wattage issues at all. The PSU is also ATX 3.0 compliant, although it does not include a 12VHPWR connector. This should not be that big of a deal because the 7900 XTX does not require the connector to begin with. On the upside, our test results showed great efficiency at 92.11% and a max ripple of just 14.4mV, both very impressive figures.
Another way Corsair made the RM850e so affordable is by skipping the famous Japanese 105°C Capacitors. It can be offputting if you compare the RM850e with other (expensive) power supplies. But Corsair has not entirely cheaper out on the internals. The capacitors are still quite reliable and industrial-grade, ensuring that the PSU works at its best for a long time. After all, the PSU has an MTBF of 100,000 hours, which translates to around 11.4 years.
Arsalan Shakil, our expert in power supplies, tested the Corsair RM850e, and this is what he said in his review:
The Corsair RM850e is an affordable ATX 3.0 PSU perfect for budget-conscious gamers, delivering solid performance and reliability. While it uses non-Japanese capacitors and a rifle-bearing fan, it still offers impressive efficiency and acceptable voltage regulation. Its compact, fully modular design makes it versatile for ATX builds.
What Makes It The Best Budget PSU For RX 7900 XTX?
You can easily get other power supplies in the same price range as the Corsair RM850e. But none of them offers the same feature set as the RM850e without compromising on reliability, and that’s what makes the Corsair RM850e the Best Budget PSU For RX 7900 XTX.
| Performance: 8/10 | Value: 9/10 |
| Features: 8/10 | Efficiency: 7.5/10 |
Corsair SF1000L
Best Compact PSU For RX 7900 XTX
Specifications: Size: 130 x 125 x 63.5mm | Efficiency Rating: 80+ Gold | Modular: Yes (Fully) | Wattage: 1,000W | Protection: OPP, OVP, UVP, OCP, OTP, SCP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12VHPWR Cable: 1 | PCI-E 6+2-Pin: 3 | SATA: 8 | MOLEX 4-Pin: 3
Pros
- Exceeds 80+ Gold efficiency
- Superior performance
- Impressive overclocking performance
- High build quality
- Remarkable pricing
Cons
- Noisy at 50% load
If you’re looking for a compact power supply to match the RX 7900 XTX, the Corsair SF1000L might be your best bet due to its impeccable efficiency, decent 1,000W capacity, high build quality, low pricing, and impressive overclocking performance. I loved the PSU’s modularity and the fact that you can use an SFX-to-ATX bracket if you change your chassis in the future.
Honestly, there’s not much to dislike about this power supply except for its noise levels. Not only does it have a Standard+ Cybenetics rating, but even during our testing, the power supply had a noise level of 41.62dB(A) at 115V AC input. Besides that, the voltage regulation is very tight, and although it’s rated 80+ Gold, it reached Platinum-level efficiency on our test bench. However, its outrageous voltage ripple performance makes it truly stand out, going up to 12.0mV at 100% load, making it ideal for extreme overclocking.
Our PSU expert, Arsalan Shakil, was in absolute awe while testing the power supply. Here’s what he commented in his review:
The Corsair SF1000L PSU is an SFL power supply that exceeds expectations with its performance and efficiency. Slightly larger than SFX PSUs, it offers better results under max load due to improved heat dissipation. It is designed for high-end, power-hungry builds, with impressive cable management and high quality internals.
What Makes It The Best Compact PSU For RX 7900 XTX?
The Corsair SF1000L is one of the best SFF power supplies I have tested, providing outstanding efficiency well beyond its 80+ Gold rating. Moreover, it has a high build quality, impressive overclocking possibilities, and a low price. Also, the SFX-to-ATX bracket makes it a game changer, making it the best compact PSU for RX 7900 XTX.
| Performance: 9/10 | Value: 8/10 |
| Features: 7/10 | Efficiency: 8.5/10 |
MSI A1000G PCIE5
Best Value PSU for RX 7900 XTX
Form Factor: ATX | Wattage: 1000W | Efficiency Rating: 80 PLUS Gold | Modularity: Full Modular | ATX 3.0: Yes
Pros
- Bang for the buck
- 1000W capacity
- ATX 3.0
Cons
- Not Platinum Efficiency
Coupled with the 1000W wattage, the MSI A1000G PCIE5 also boasts an efficiency rating of 80 PLUS Gold certification. Therefore, the MSI A1000G offers high capacity with great efficiency at the same time. Furthermore, it is also ATX 3.0 compatible, solidifying its position as a future-proof PSU. While these three features alone give the MSI A1000G a phenomenal value, this is not it. The power supply also uses the infamous Japanese 105°C Capacitors to offer unparalleled reliability and durability. Speaking of durability, the 10-year warranty also goes a long way because you are going to use a whopping 1000W PSU for many years.
To ensure optimal temperatures, the A1000G uses a 135mm Fluid Dynamic Bearing (FDB) fan to keep the power supply from overheating. The fan also comes with a Zero RPM Mode, which means that the fan will only begin spinning when the TDP is above 40%. While the Zero RPM Mode is a good feature that offers low noise and energy saving, you can disable it by pressing the button on the back.
What Makes It The Best Value PSU for RX 7900 XTX?
For the money, the MSI A1000G comes with a 1000W capacity, an 80+ GOLD certification, Japanese capacitors, ATX 3.0 compatibility, and a 10-year warranty. These features make the MSI A1000G the Best Value PSU for RX 7900 XTX.
We have also tested its 850W variant:
| Performance: 9/10 | Value: 8/10 |
| Features: 8/10 | Efficiency: 8/10 |
Our Test Results
To make sure our recommended products are truly the best, we tested their ripple performance, difference in regulation, and average efficiency. Check out our test results here:
PSU Key Terms
Following are the key PSU terms that you should always keep in mind whenever you’re looking for a power supply:
- Wattage: PSU wattage represents the maximum power output capacity, measured in watts (W). It determines the power delivery to your components, so it’s crucial to match it with your system’s requirements.
- Efficiency: PSU efficiency measures how effectively it converts AC power to DC power. Opting for higher efficiency ratings like 80 Plus Bronze, Silver, Gold, Platinum, or Titanium can reduce energy wastage and lower electricity bills.
- Form Factor: PSU form factor refers to its physical size and mounting compatibility. It’s important to choose a PSU that matches the supported form factor of your computer case to ensure a proper fit.
- Modularity: PSUs come in modular or non-modular variations. Modular PSUs feature detachable cables, offering flexibility and improved cable management. On the other hand, non-modular PSUs have fixed cables, which can be more cost-effective but may lead to cable clutter. There are also semi-modular PSUs; they have the important connectors fixed to the PSU, while the less important cables can be detached.
- Protection Features: PSU protection features include safeguards against overloading, overvoltage, and short circuits to prevent potential damage to your components. It’s essential to select a PSU that comes with these protective measures for added safety.
- Fan Type and Noise Level: PSU fan type refers to the cooling mechanism used, while noise level indicates the operating sound. Considering both factors ensures efficient cooling and a quieter system overall.
Do You Need A New PSU For RX 7900 XTX?
The answer to this question is fairly simple. The minimum recommended PSU for the RX 7900 XTX is 800W. Therefore, if your old PSU has a lower wattage, then you should consider upgrading your PSU to prevent potential damage to your RX 7900 XTX.
While you can get away with a 700W or 750W PSU for an RX 7900 XTX, I would not recommend going down this route as it possesses risks. When I tested the RX 7900 XTX, its maximum power draw during gaming was somewhere between 350W to 360W. But its 20ms power spikes were crossing 450W. Therefore, it is highly recommended that you go for at least an 850W PSU with plenty of protective features to comfortably run your RX 7900 XTX.
Related Read: How To Check Insufficient Power Supply
How We Picked The Best PSU For RX 7900 XTX
To bring together the best PSU for RX 7900 XTX, I tested a bunch of top-tier power supplies and evaluated them over a series of factors. Whenever you’re in the market for power supplies, it is highly recommended that you always consider these factors as they will help you make the right choice.
- Performance: Of course, the first thing we test in all our power supplies is their performance. As such, we used special tools to test the voltage ripple, regulation, and efficiency of every PSU across different rails. This gave us a clear picture of which PSU is more stable and good to go for the 7900 XTX
- Reliability & Durability: We also took apart every PSU to get a look inside its components. A power supply is only as good as its capacitors and other internals, and that’s what matters the most. Furthermore, its fan’s quality and bearing should also be high-end because the fan can break down earlier than the actual PSU.
- Modularity: If a PSU is fully modular, all of its cables can be detached. This way, you only need to use and plug in the cables, and the extra connectors can live in the box. A fully modular PSU not only eases up the cable management, which ultimately makes your build look cleaner, but it also improves the airflow because there aren’t a bunch of messy cables hanging out in your rig.
- ATX 3.0 Compatibility: While the RX 7900 XTX is not ATX 3.0 compatible, it is always good to have an ATX 3.0 compatible PSU for future-proofing. The next generation of AMD graphics cards, just like the current gen NVIDIA GPUs, will likely use the PCIe 5 cable. Therefore, the next time you upgrade your GPU, there is a high chance you will need an ATX 3.0 compatible PSU. Therefore, I included a few ATX 3.0 power supplies in my list as well.
FAQs
You need a well-built 850W power supply for the RX 7900 XTX, like the EVGA Supernova 850 P6, which also comes with 80 PLUS Platinum Certification for improved efficiency.
In my tests, the RX 7900 XTX drew around 350W during normal gaming and around 360W with Ray Tracing enabled.
Yes, AMD recommends an 800W PSU for the RX 7900 XTX. Therefore, an 850W PSU is enough for the RX 7900 XTX.
No, the RX 7900 XTX is not ATX 3.0 compatible. Hence, you don’t need an ATX 3.0 PSU for your RX 7900 XTX. However, it is good to go for an ATX 3.0 PSU for future-proofing.
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[Hardware Reviewer & Editor]
Meet Nauman Siddique, a highly experienced computer science graduate with more than 15 years of knowledge in technology. Nauman is an expert in the field known for his deep understanding of computer hardware.
As a tech tester, insightful reviewer, and skilled hardware editor, Nauman carefully breaks down important parts like motherboards, graphics cards, processors, PC cases, CPU coolers, and more.
- 15+ years of PC Building Experience
- 10+ years of first-hand knowledge of technology
- 7+ years of doing in-depth testing of PC Hardware
- A motivated individual with a keen interest in tech testing from multiple angles.
- I majored in Computer Science with a Masters in Marketing
- Previously worked at eXputer, EnosTech, and Appuals.
- Completed Course in Computer Systems Specialization From Illinois Tech
Get In Touch: nauman@old.tech4gamers.com
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