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The RTX 5070 has finally hit the shelves, and it is currently one of the most affordable RTX 50-series GPUs you can get your hands on, given that you find one in stock. We were lucky enough to get a review unit for our testing, and in our RTX 5070 review, we saw that the GPU performs quite well, and its power consumption can reach as high as 231W under heavy load.
While it doesn’t demand as much power as the high-end RTX 5080 or the flagship RTX 5090, pairing it with a weak power supply is never a good idea. That’s why my team and I spent the last week testing every detail of the RTX 5070. Now that our review is in, we’re also ready to recommend the five best power supplies that work great with this GPU.
Here is a quick overview of our recommended power supplies, all compared with each other:
If you’re considering the RX 9070 from AMD instead, I highly recommend checking:
Best PSU For RTX 5070
These are the best power supplies for the RTX 5070 that you can get right now:
- Best Overall: SilverStone Hela 850R Platinum
- Best High-End: Enermax PlatiGemini 1200W Platinum
- Best 1000W: XPG CyberCore II 1000W
- Best SFX: CORSAIR SF1000L SFX
- Best Value: XPG Core Reactor II VE 850W Gold
SilverStone Hela 850R Platinum
Best Overall PSU For RTX 5070
Specifications: Size: 150 x 150 x 86mm | Efficiency Rating: Cybenetics Platinum | Modular: Yes (Fully) | Wattage: 850W | PCIe Cable: 12V-2×6
Pros
- Solid all-rounder
- Excellent performance
- High-quality internals
- ATX 3.1 compliant
Cons
- Expensive
Read Our Silverstone Hela 850R Platinum Power Supply Review
In the world of power supplies, SilverStone is a name that speaks for itself. The company has constantly delivered incredibly robust power supplies with a focus on durability, and the SilverStone Hela 850R Platinum is no different. As you can guess from its name, it is an 850W PSU with a Cybenetics Platinum certificate. Since NVIDIA itself recommends a 650W power supply for the RTX 5070, we think going with at least an 850W PSU is the right choice, as you get plenty of room for any transient spikes, and down the road, if you place to upgrade GPUs, you may get away with the same power supply.
Sure, the SilverStone Hela 850R Platinum is not the cheapest 850W power supply you can buy, but it is for sure one of the most performance-focused ones with exceptional efficiency. When we tore down the PSU and looked inside its individual components, we saw high-end Japanese Electrolytic and Polymer capacitors, as well as individual capacitors for stuff like Half-Bridge MOSFETs, APFC, and Bridge Rectifiers, that basically help improve the PSU’s efficiency and noise performance. Speaking of which, in our test results, the PSU averaged its efficiency at around 93.38%, which is simply amazing.
Given the performance, features, and overall value of the SilverStone Hela 850R Platinum, here’s how we described it in our review:
In our tests, the PSU delivered impressive results, showcasing excellent voltage regulation, high efficiency (up to 94.23%), and exceptional voltage ripple performance. The PSU’s robust build includes top-quality Japanese capacitors and efficient cooling, meaning quiet operation even under load.
What Makes It The Best Overall PSU For RTX 5070?
No matter how you look at it, the SilverStone Hela 850R Platinum has everything you would expect from the latest and greatest power supply that can comfortably power your gaming PC. Since it is an ATX 3.1 PSU, you also get a 12V-2×6 GPU connector, though it is not that relevant for the RTX 5070, it is still nice to know that in case you switch to a more powerful GPU down the road, your PSU can handle it. Plus, from raw performance and efficiency to durability, the SilverStone Hela 850R Platinum ticks all the right boxes to be the best overall PSU for the RTX 5070.
| Performance: 8.5/10 | Value: 9/10 |
| Overclocking: 8.5/10 | Design: 8/10 |
Enermax PlatiGemini 1200W Platinum
Best High-End PSU For RTX 5070
Form Factor: ATX | Generation: ATX 3.1 | Wattage: 1200W | Efficiency Rating: 80 PLUS Platinum | Modularity: Fully Modular | PCIe Cable: 12V-2×6
Pros
- Perfect for overclocking
- Exceptional voltage ripple
- Good noise performance
Cons
- Quite pricey
Read Our Enermax PlatiGemini 1200W Platinum Review
If you’re after an even more performance-oriented, high-end power supply, and have the budget to afford one, you cannot go wrong with the Enermax PlatiGemini 1200W Platinum. It is not just the wattage capacity that makes a power supply high-end, instead, when you’re testing such high-capacity PSUs, you need to pay extra attention to the internal components to validate that the PSU can really handle its fair share of load, and Enermax has done just that by packing the PlatiGemini with a 12VO design, plenty of heatsinks, a well-designed topology, and of course, 100% Japanese Electrolytic and Polymer capacitors.
So, the real question is, how does it translate to real-world performance? Well, at 100% load, the power supply only had 10.4mV of maximum ripple, which is one of the lowest ripple numbers I have ever seen in my years of testing power supplies. This, alone, makes the Enermax PlatiGemini 1200W Platinum a no-brainer choice for anyone who plans to overclock heavily and wants a high-end power supply. Apart from that, the PSU also maintained a 93.92% average efficiency, which is very impressive for a 1200W power supply.
This is how I summarized the PlatiGemini 1200W in my hands-on review of the PSU:
The Enermax PlatiGemin 1200W Platinum takes the crown with its robust build, top-tier efficiency, and exceptional performance. It has a fully modular design, premium mesh-sleeved cables, superior voltage regulation, and excellent thermal management.
What Makes It The Best High-End PSU For RTX 5070?
If by high-end, you are after a power supply that simply leaves all the competition in the dust with its performance, efficiency, and overall capacity to handle overclocking, the Enermax PlatiGemini 1200W Platinum is the way to go. But apart from its raw performance, its thermals, noise performance, and even mesh-sleeved cables which significantly improve cable management, are all the additional reasons that undoubtedly make it the best high-end PSU for RTX 5070.
| Performance: 10/10 | Value: 8/10 |
| Overclocking: 10/10 | Design: 9/10 |
XPG CyberCore II 1000W Platinum
Best 1000W PSU for RTX 5070
Form Factor: ATX | Generation: ATX 3.0 | Wattage: 1000W | Efficiency Rating: 80 PLUS Platinum | Modularity: Fully Modular | PCIe Cable: 12VHPWR
Pros
- High efficiency
- 10-year warranty
- Reliable components
Cons
- Hard-sleeved cables
Read Our XPG CyberCore II 1000W Review
So far, we’ve covered 850W and 1200W power supplies, but if you’re looking for something right in the middle that offers the best of both worlds, the XPG Cybercore II 1000W Platinum is a great choice. XPG has designed this PSU with a hybrid architecture that combines both analog and digital components, striking a balance between excellent performance and a reasonable price. And like the other models we’ve recommended, it comes with all-Japanese capacitors, so reliability won’t be an issue.
As per our in-house test results, the XPG Cybercore II 1000W Platinum has an outstandingly tight voltage regulation, as it differed by just 0.66% across loads. Similarly, it also achieved chart-topping efficiency at 93.40%, which also explains why it carries the Platinum efficiency badge. As for voltage regulation, the PSU maxed out at just 16mV, which, again, is very impressive for a 1000W PSU and means that you can easily go for OC’ing. One thing that I should mention here is that the PSU comes with hard-sleeved cables. This is not a deal breaker, but it can make cable management slightly difficult.
There’s no denying that the XPG CyberCore II 1000W Platinum is an excellent PSU for the RTX 5070, here’s how we described it in our review:
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 1000W PSU For RTX 5070?
All things considered, the XPG CyberCore II 1000W Platinum checks all the boxes for a solid 1000W PSU. With its impressive voltage ripple control, it can easily handle extreme overclocking without any issues. As such, whether you’re after raw performance, long-term reliability, or high efficiency, this PSU is an easy recommendation—especially if you’re looking for the best 1000W option for the RTX 5070.
| Performance: 9/10 | Value: 9/10 |
| Overclocking: 9/10 | Design: 9/10 |
CORSAIR SF1000L SFX Gold
Best SFX PSU for RTX 5070
Form Factor: SFX | Generation: ATX 3.1 | Wattage: 1000W | Efficiency Rating: 80 PLUS Gold | Modularity: Fully Modular | PCIe Cable: 12V-2×6
Pros
- Very impressive performance
- Overall good value
- Corsair’s famous customer support
Cons
- Can get noisy
Read Our CORSAIR SF1000L SFX Review
If you are building a small form factor PC with an RTX 5070 at its heart, the CORSAIR SF1000L SFX Gold is simply perfect for you. Despite its compact size, the PSU is packed with incredible performance and features that allows it to leave even full-sized power supplies to the dust. Inside, you will find the highest quality of Japanese capacitors for unparallelled reliability, and that’s also why Corsair is offering a 7-year warranty with this PSU.
One of the standout features of the SF1000L SFX is that, despite its 80 PLUS Gold rating, it actually delivered Platinum-level efficiency in our tests, reaching 93.2%. It also maintained an impressively low ripple of just 12mV, outperforming many full-sized ATX PSUs in its class—all while being much more compact. Since it’s an SFX unit, noise levels can get a bit higher at around 50% load, but considering everything else it offers, that’s a small trade-off.
This is what I said about the CORSAIR SF1000L SFX Gold after reviewing it:
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.
What Makes It The Best SFX PSU For RTX 5070?
You might think that choosing a compact SFX power supply for your RTX 5070 means sacrificing some performance, but the CORSAIR SF1000L SFX Gold proves otherwise. In fact, it outperforms some full-sized ATX PSUs in ripple performance. Simply put, if you want a stable and reliable gaming experience in a small form factor build, the CORSAIR SF1000L SFX Gold is the best SFX PSU you can get.
| Performance: 8/10 | Value: 9/10 |
| Overclocking: 7.5/10 | Design: 8/10 |
XPG Core Reactor II VE Gold
Best Value PSU For RTX 5070
Specifications: Size: 140 x 150 x 86mm | Efficiency Rating: 80+ Gold | Modular: Yes (Fully) | Wattage: 850W | Protection: OPP, OVP, UVP, OCP, OTP, SCP, NLO, SIP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12V-2×6 12+4 Pin: 1 | PCI-E 6+2-Pin: 3 | SATA: 6 | MOLEX 4-Pin: 2
Pros
- Best bang for the buck
- Overall decent performance
- Excellent voltage regulation
Cons
- Not the best for extreme OC
Read Our XPG Core Reactor II VE 850W Power Supply Review
If you aren’t interested in overclocking and want a PSU that can comfortably power the RTX 5070 without any hiccups, the XPG Core Reactor II VE Gold is worth considering. It has an exceptional price-to-performance ratio, as the PSU relies on the CWT platform and has very durable internals despite having a relatively better price tag. There are cutdowns, like the lack of a hybrid fan mode, but we still measured great temperatures across varying loads, so overheating is not a problem at all.
As far as performance is concerned, the Core Reactor II VE averages around 92.11% efficiency in our tests, which is one of the main reasons why we are calling it a great value for money, as you don’t see such good efficiency at this price point. Similarly, we also noticed one of the tightest voltage regulation performances, as the PSU had a difference of just 0.33 on the 12V rail. This is one of the lowest voltage regulation differences we have seen, period. Lastly, I have to point out that its voltage ripple is not as incredible, especially when compared to the other PSUs I am recommending for the RTX 5070, but it is still more than enough to run the graphics card without any stability issues.
After testing the XPG Core Reactor II VE Gold and going over all of its aspects, this is how we summarized the PSU:
The XPG Core Reactor II VE 850W delivers future-proof compatibility with ATX 3.1 compliance, exceeding 80Plus Gold efficiency for top-notch energy savings. The voltage ripple at the 12V rail was also decent, which seems fine given the value-orientated approach of the PSU. In short, XPG has really prioritized affordability and overall performance for casual and serious PC builders alike.
What Makes It The Best Value PSU For RTX 5070?
All things considered, the XPG Core Reactor II VE Gold nails down the essentials like high-quality internals, great efficiency, and ATX 3.1 compliance to be an overall great option for the RTX 5070, and when you consider its affordable pricing, there is no denying that the value proposition of this PSU is simply off the roof, and that’s specifically why I have picked it as the best value PSU for RTX 5070.
| Performance: 8/10 | Value: 10/10 |
| Features: 7/10 | Efficiency: 8/10 |
Our Test Results Of The Best PSUs For RTX 5070
My team and I have designed a test bench to benchmark power supplies to compare and recommend the best ones among them based on average efficiency, maximum voltage ripple, and the difference in voltage regulation across loads, as these three are the most important aspects of a good PSU. As such, below you will find our in-house test results for the recommended PSUs for RTX 5070.
Important PSU Terms To Look For
When buying a power supply, its features may appear complex at first. Here are some important terms to know:
- Voltage Ripple: This is the small fluctuation in the power supply’s output when converting AC to DC. Although zero ripple isn’t possible, a lower ripple means a more stable system and better overclocking potential.
- Voltage Regulation: This term describes how well a power supply maintains the correct voltage even when input or load changes. A high-quality PSU keeps variations to about 3% for steady performance and improved overclocking.
- PSU Efficiency: Efficiency measures how well a PSU converts power from the wall (AC) into power your PC can use (DC). Ratings such as 80+ Bronze, Silver, Gold, Platinum, and Titanium indicate the level of efficiency.
- Cybenetics Rating: This rating system provides a detailed evaluation of a PSU. It uses two scores—ETA for efficiency and LAMDA for noise levels—which some consider more comprehensive than the standard 80+ certifications.
- ATX 3.0/3.1: This is a PSU standard that comes with a built-in 12VHPWR power connector for modern graphics cards. It follows ATX 3.1; the main difference is in the connector design. ATX 3.0 uses a 12VHPWR cable for high-end NVIDIA GPUs, while ATX 3.1 offers a redesigned 12V-2×6 connector for improved reliability.
How We Tested And Picked These Power Supplies
We picked the top five best power supplies for RTX 5070 by looking at these four key factors:
- Performance: The most important part was how well each PSU performed. I looked at how stable the voltage was, the level of voltage ripple, and the average efficiency. I also checked their cooling ability and how they handled maximum stress.
- Build Quality: The quality of the parts matters a lot for long-term durability and reliability. I took apart each power supply to inspect its internal components, and I even snapped some photos that you can see in the reviews.
- Features: I also went through extra features like how quiet the PSUs are, the type of cables they use, the quality of the fans, and other similar aspects.
- Value: Finally, I only recommended PSUs that offered great value. This doesn’t mean they were all cheap—some are on the pricier side—but their overall performance, features, and build quality make them worth the investment.
FAQs
NVIDIA recommends a 650W PSU for the Founder’s Edition RTX 5070. As per our in-house testing, the RTX 5070’s power consumption averages around 225W to 230W under heavy load. As such, we recommend pairing it with at least an 850W PSU, because this will also future-proof your build.
While the RTX 5070 can easily run with an 850W power supply, getting a higher wattage option is never a bad idea. That’s because a PSU is supposed to last you for several years, so it is likely that you will use the same PSU for future upgrades as well, and in that case, the 1000W capacity can come in handy.
On paper, if compared to its previous gen, the RTX 5070 should be equal to the RTX 4070 Ti Super. As for AMD’s RX 9000 series, the RTX 5070 is a direct competitor of the RX 9070.
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[Errors Troubleshooting Expert]
Arsalan Shakil (aka GuyThatDoesEverything on YouTube) is a PC Tech Enthusiast and Electronic Geek. With over 10+ years of experience in Electronics, he then decided to explore Software Engineering to design embedded products and automate existing hardware solutions.
When he started tearing down old cameras to understand how they worked, he was shocked (literally, when he got zapped by a flash discharge capacitor), giving him the power (debatable) to fall in love with videography/photography. He also started making some fun videos that later became YouTube tech reviews.
Skills:
- 10+ years of experience in Electronics design, embedded solutions, and prototyping
- Majored in Software Engineering
- Research paper publication in IEEE for Embedded Military Uniform & LoRa WAN wireless technology
- Specialized in IoT Solutions
- PC Enthusiast & PC Modder
In his local region, he’s known to expose cheap PSU brands, often claiming fake certification or false claims on the box. He’s a true nerd and needed some friends in his life. Then he met some guys who work at Tech4Gamers, and they also came out to be equal nerds who suggested he join Tech4Gamers as a Hardware Expert.
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