Asthe best graphics cardsandthe best CPUsbecome all the more power-hungry, a powerful and consistently reliable PSU proves to be an absolute necessity. That’s why when it comes time tochoosing the perfect componentsto build a gaming PC with, it’s crucial not to skimp out on the power supply.
Although Game Rant’s guide forthe best PSUsis a great place to start when looking for options to add to your build, it’s also important to stay up to date with the latest developments in the tech world. While major updates to processors and graphics cards are talked about regularly, even power supplies are subject to significant upgrades. One vital yet recent change is the latest ATX 3.1 form factor, which is currently on track to replace all existing ATX 3.0 PSUs.
While Corsair isn’t the first company to release a line of ATX 3.1-compliant PSUs, their updates to the RMx series hint at what the future of gaming PCs might hold.
What is ATX 3.1?
It can be hard to know what you’re getting into if you’re unfamiliar with the concept of ATX. To keep it brief, Advanced Technology Extended, also known as ATX, refers to the size and style of the PSU. While there’s a lengthy list of PSU types available, the standard choice for gaming PCs is ATX or SFX. These options are constantly being updated, and these updates are given numbers to distinguish them.
With that being said, the primary difference between 3.0 and 3.1 ATX is minor, but crucially important.
The most notable change impacts the 12VHPWR connector, which has now been replaced with a newer 12V-2x6 connector. The PC community has long had reservations about the 12VHPWR connector ever since Nvidia adopted it for use in 40 Series GPUs. Since 2022, the 12VHPWR connector hasrun into many problemsthat have caused damage to systems and various pieces of hardware. Luckily, with ATX 3.1 PSUs, changes have been made that aim to reduce the chances of failure. The 12V-2x6 Connector fixes many of the flaws found in the original connector by adding longer conductor terminals and shorter sense pins that will shut off your GPU if the connection comes loose.
So, if you are a proud owner of an RTX 4080 or RTX 4090, it may be prudent for you to upgrade your PSU to one that supports ATX 3.1 sooner rather than later, to ensure the health and longevity of your graphics card.
Corsair RMx Series Updates: What You Need To Know
The Corsair RMx Series overhaul affects three models: the RM1000x, RM850x, and the RM750x.
For those who can’t tell the difference, don’t worry. Each of these PSUs features the same ATX 3.1 compliance, and all support the improvements brought to the RMx lineup. These three models are only distinguished by their total power output (Wattage), which can be seen in their names.
For more information onhow to choose the right amount of wattage for your PSU, consider checking out this Game Rant article for details.
ATX 3.1 Compliance
Shopping for a PSU that boasts ATX 3.1 compliance is ideal for those who already own an RTX 4090 or RTX 4080, as well as those who plan on upgrading their PC with modern components.
While ATX 3.1 largely exists to fix the flaws of the 12VHPWR connector, it also serves to help simplify the cable management in your build. The introduction of the 12v-2x6 cable brings users a simplified solution that plugs directly from the PSU to the GPU, without the need for extension cables.
Improved Thermals, Efficiency & Lower Noise Levels
While the upgrade to ATX 3.1 is more than appreciated, the improvements to this line of PSUs don’t stop there. Corsair has also taken the time to focus on the internals of the RMx series, elevating performance, thermals, and overall reliability.
First, the main PCB of the RMx PSU has received a complete overhaul that introduces a new six-layer design with industrial-grade, 105°C-rated capacitors. Additionally, the 140mm fan on the RMx PSU has received a significant upgrade that helps make this power supply even quieter than before. The 140mm fan now uses a low-noise fluid dynamic bearing and also supports Corsair’s “Zero RPM” mode. This means that the fan will not start to spin until the PSU reaches a certain temperature.
The newest Corsair RMx PSUs are also even more efficient than before, boasting an impressive 91% efficiency rating and an A+ rating from Cybenetics for noise level.
Should You Make The Upgrade?
There’s always a sense of hesitation when it comes to buying new components for your gaming PC. It often feels like components are released left and right, all boasting the latest and greatest advancements— it can be hard to decide if now is the right time to make the upgrade.
Simply put, there is no perfect time to upgrade. Many gamers prefer to wait to purchase something new until the next best thing comes out, but the next best thing is almost always on the horizon. Instead, if you are someone who currently owns an RTX 4090 or RTX 4080 and wants to ensure the longevity and health of your purchase, then a 3.1 ATX PSU like the Corsair RMx may be worth considering.
Corsair RM1000x ATX 3.1 PSU
Best suited for high-end systems with a modern GPU and CPU combo, this improved power supply boasts ATX 3.1 compatibility and remarkably low noise levels. If you’re someone looking to upgrade with a PSU that is sure to help future-proof your system, look no further than the Corsair RM1000x.
Corsair RM850x ATX 3.1 PSU
Although not as powerful as the 1000 W version, this mid-range PSU is suitable for mid to high-end systems with slightly lower power requirements. Like other PSUs in this series, the RM850x boasts extremely low noise levels, making it a great option for noise-conscious gaming PCs.
Corsair RM750x ATX 3.1 PSU
The Corsair RM750x is the most affordable option in this series, listed at $120. If you’re someone with relatively low power needs on a bit of a budget, then the Corsair RM750x may be the best choice for you.
