Corsair RMX Series (2021), RM750x Review

PSU Tier List

I recently had the opportunity to test out and review the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply RMx 750W. As someone who has always valued high-quality power supplies, I was excited to see how this one performed. After spending some time with it, I can confidently say that it has exceeded my expectations. Here’s everything you need to know about this power supply.

Corsair RMX Series (2021) Power Supply

Pros and Cons

What We Liked

  • Fully modular design for easy cable management and improved airflow within the case.
  • The low-noise fan operates silently under regular loads and has excellent performance under heavy load.
  • High build quality with premium cables and necessary protections for component safety.
  • Outstanding power efficiency with 80 PLUS Gold certification for reduced energy consumption and cooler system operation.
  • Ample power delivery and excellent voltage regulation for high-end components.

What Can Be Improved

  • The size of the power supply may not fit in smaller PC cases.
  • There is no selection switch for the fan zero-rpm eco mode.

Quick Verdict

The Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply RMx 750W is an exceptional product that delivers on all fronts. Its fully modular design, low-noise fan, and outstanding power efficiency make it a reliable choice for any PC enthusiast or gamer. The build quality and voltage regulation are excellent, ensuring stable power delivery to high-end components. The only drawbacks are the size, which may not fit in smaller PC cases, and the lack of a selection switch for the fan zero-rpm eco mode. Overall, if you’re looking for a high-quality power supply to power your system, I highly recommend considering the Corsair RM750x.

Check out the Corsair RMX Series (2021) Power Supply on Amazon.

Unboxing – What’s Inside?

As a technology enthusiast based in the USA, I recently purchased the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply RMx 750W on Amazon. Delivery was speedy, and the product arrived at my doorstep in just a few days.

Upon unboxing the Corsair RM750x, I found the following items inside:

  • Corsair RM750x Power Supply
  • Modular cables (fully detachable)
  • User guide and documentation
  • Power cord


Here are the specifications of the Corsair RM750x Power Supply:

  • Brand: Corsair
  • Model Name: RM750x
  • Manufacturer: Corsair
  • Voltage: 120 Volts
  • Power Source: Corded Electric
  • Cooling Method: Air
  • Wattage: 750 watts
  • Form Factor: ATX
  • Output Wattage: 750
  • Connector Type: EPS
  • Compatible Devices: Personal Computer
  • Color: Black
  • Item Dimensions (LxWxH): 12.2 x 5.3 x 8.5 inches
  • Item Weight: 6.6 pounds
  • Item model number: CP-9020199-NA
  • Series: RM750x

Documentation/ User Guide

The included user guide and documentation proved to be helpful in setting up and understanding the features of the Corsair RM750x Power Supply. It provided detailed instructions on installation, cable management, and troubleshooting. You can find the user guide here.

Features – What We Found

Fully modular

The Corsair RMX Series (2021), RM750x power supply is fully modular, allowing you to connect only the cables that your system needs. This results in easier cable management as you can eliminate unused cables, reducing clutter inside your PC case. Additionally, this feature improves airflow within your system, promoting better cooling and potentially enhancing overall performance.

A pro-tip for utilizing this feature is to plan your cable management in advance. Take into consideration the components you have in your system and only connect the necessary cables. This will not only make your system look cleaner but also facilitate future upgrades or maintenance.

High-performance, low-noise fan

Equipped with a 135mm ML fan, the Corsair RM750x power supply utilises a magnetic levitation bearing and custom engineered rotors to deliver high performance, while maintaining low noise levels. The magnetic levitation bearing reduces friction and noise, allowing the fan to operate quietly even under heavy load conditions.

In addition to its quiet operation, the fan’s custom engineered rotors contribute to its high performance. By optimizing the design, Corsair has ensured efficient cooling for the power supply, enabling it to handle demanding tasks without compromising reliability or generating excessive heat.

Pro-tip: To further enhance the cooling efficiency of your system, ensure that your PC case has proper ventilation and airflow. This will keep all your components, including the power supply, operating at optimal temperatures.

EPS12V connector for compatibility

The Corsair RM750x power supply features an EPS12V connector, offering compatibility with modern graphics cards and motherboards. This connector provides the necessary power delivery to support high-performance components, ensuring stable and reliable operation.

Whether you have a high-end graphics card or the latest motherboard, this power supply can provide the necessary power without any compatibility issues. This feature gives you peace of mind, knowing that your power supply is capable of supporting your entire system’s power requirements.

Industrial-grade Japanese capacitors

The Corsair RM750x is equipped with 100% industrial-grade, 105°C rated Japanese capacitors. These capacitors are known for their high quality, ensuring unwavering power and reliability. The use of Japanese capacitors further enhances the lifespan and performance of the power supply.

Industrial-grade capacitors are designed to withstand harsh conditions and operate consistently even under high temperatures. This feature guarantees that the power supply will provide stable power to your system, minimizing the risk of any voltage fluctuations or failures that could potentially damage your components.

Pro-tip: Investing in a power supply with high-quality capacitors is crucial for the longevity and stability of your system. It is a worthy investment to prevent any potential power-related issues that may harm your components.

Supports Modern Standby sleep mode

The Corsair RM750x power supply supports Modern Standby sleep mode, enabling extremely fast wake-from-sleep times and better low-load efficiency. Modern Standby sleep mode maintains network connectivity during the sleep state, allowing your system to quickly resume its tasks when awakened.

This feature is particularly beneficial for users who frequently put their system to sleep. By supporting Modern Standby sleep mode, the power supply ensures that you can quickly resume your work or entertainment without experiencing any significant delays.

When your system is in sleep mode, it can still receive updates or notifications, making it convenient for tasks such as downloading or uploading files in the background without fully powering on the system. This feature also improves low-load efficiency, optimizing power consumption when your system is not under heavy usage.

Final Thoughts

Our Score: 93.0

I recently purchased the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply and I must say, I am highly impressed with its performance and features. Corsair has always been known for delivering high-quality power supplies, and the RM750x is no exception. This power supply is fully modular, allowing for easy cable management and improved airflow within the case. The efficiency of the RM750x is outstanding with its 80 PLUS Gold certification, ensuring that my system consumes less energy and runs cooler. The low-noise fan operates quietly under regular loads and even during heavy usage, minimizing unwanted noise. The build quality is top-notch with its solid and durable construction, and the provided cables are of high quality as well. Overall, the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply is an exceptional product that delivers excellent power efficiency, silent operation, and solid build quality.

If you are in need of a powerful and reliable power supply for your PC build, I highly recommend the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply. It has all the features you need, including high power output, modular design for easy cable management, excellent efficiency, and a low-noise fan. Corsair has once again proven why they are a leading brand in the PC component market. I am extremely satisfied with my purchase and I cannot wait to continue enjoying the reliable performance of this power supply in my system. Don’t hesitate to invest in the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply for a high-quality and efficient power supply solution.

Click here to check out the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply on Amazon.

Still Looking? Checkout These Alternatives

When it comes to choosing the right power supply for your computer, the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply RMx 750W may seem like a great option. However, there are several alternative products that you should consider before making your final decision. Here are five alternative products that offer similar or even better features:

  1. Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply: This power supply is the main product we are comparing against. While it offers excellent performance and reliability, the alternatives listed below provide additional features and benefits.
  2. AMD Ryzen 7 5700G 8-Core, 16-Thread Unlocked Desktop Processor with Radeon Graphics: If you’re looking to upgrade your computer’s processor, this alternative is worth considering. With powerful performance and integrated Radeon Graphics, it offers a seamless gaming and multitasking experience. You can find it on Amazon.
  3. MSI MAG B550 TOMAHAWK Gaming Motherboard: A motherboard is a critical component of any gaming rig, and the MSI MAG B550 TOMAHAWK offers exceptional compatibility and performance. With support for AMD Ryzen 5000 Series processors and PCIe 4.0, it ensures smooth gameplay and fast data transfer. You can find it on Amazon.
  4. ASUS AM4 TUF Gaming X570-Plus (Wi-Fi) AM4 Zen 3 Ryzen 5000 & 3rd Gen Ryzen ATX Motherboard: This motherboard boasts PCIe 4.0 support, dual M.2 slots, and robust power delivery for enhanced performance. It is ideal for gaming enthusiasts and those seeking a reliable and feature-rich motherboard. You can find it on Amazon.
  5. Empty Slot: At the moment, there is no fifth alternative product to suggest. However, keep an eye out for other alternatives that may offer unique features and benefits.

While the Corsair RMX Series (2021), RM750x, 750 Watt, Gold, Fully Modular Power Supply RMx 750W is a solid choice, these alternative products provide a range of additional features that may better suit your needs. Whether you’re looking for an upgraded processor, a high-performance motherboard, or even a unique alternative, these options offer excellent performance and reliability. Explore these alternatives and choose the one that aligns with your specific requirements.

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