Unboxing the Asus ROG Thor 850W and Corsair RM850X: Which is the Best Buy?

Choosing the right power supply unit (PSU) for your PC can be a daunting task, especially when faced with a plethora of options from reputable brands like ASUS and Corsair. Two popular contenders in the 850W segment are the ASUS ROG Thor 850W and the Corsair RM850x. Both PSUs boast impressive features and high-quality construction, making it difficult to determine the clear winner. This comprehensive comparison will delve into the key aspects of both units, helping you make an informed decision based on your specific needs and budget.

Performance and Efficiency: A Close Contest

Both the ASUS ROG Thor 850W and Corsair RM850x excel in terms of performance and efficiency. They both deliver clean and stable power to your components, ensuring optimal operation and longevity.
ASUS ROG Thor 850W:

• 80 Plus Platinum Certification: This certification guarantees high efficiency levels, reducing energy waste and lowering your electricity bill.
• Zero RPM Fan Mode: The fan remains off at low loads, minimizing noise and extending the lifespan of the fan itself.
• 135mm Axial-tech Fan: This fan design provides excellent airflow and cooling performance, even under heavy loads.

Corsair RM850x:

• 80 Plus Gold Certification: While not as high as Platinum, Gold certification still ensures excellent efficiency levels.
• Semi-Fanless Operation: The fan only spins up when necessary, contributing to a quieter experience.
• 135mm Fluid Dynamic Bearing (FDB) Fan: This fan design provides smooth and quiet operation.

Verdict: While the ASUS ROG Thor 850W edges out with its Platinum certification, both PSUs deliver exceptional performance and efficiency. The difference in efficiency is minimal, and the choice ultimately boils down to individual preference and budget.

Features and Design: A Matter of Style and Functionality

Both the ASUS ROG Thor 850W and Corsair RM850x offer a range of features and design elements catering to different preferences.
ASUS ROG Thor 850W:

• RGB Lighting: The PSU features customizable RGB lighting, allowing you to match your PC’s aesthetic.
• OLED Display: This unique feature displays real-time power consumption and other vital information.
• Modular Cables: This design allows you to connect only the necessary cables, simplifying cable management and improving airflow.

Corsair RM850x:

• Fully Modular Cables: Like the ASUS ROG Thor 850W, the RM850x also offers fully modular cables for clean and organized cable management.
• Black Anodized Finish: The RM850x boasts a sleek and understated design with a black anodized finish.
• 10-year Warranty: Corsair offers a generous 10-year warranty, providing peace of mind for long-term reliability.

Verdict: The ASUS ROG Thor 850W stands out with its RGB lighting and OLED display, making it a more visually appealing option. However, the Corsair RM850x’s fully modular cables and 10-year warranty offer greater practicality and long-term value.

Reliability and Warranty: Peace of Mind for Your Investment

Both the ASUS ROG Thor 850W and Corsair RM850x are known for their high reliability and durability. However, Corsair offers a slightly longer warranty period, providing greater peace of mind.
ASUS ROG Thor 850W:

• 7-year Warranty: ASUS offers a 7-year warranty, covering any defects or malfunctions.

Corsair RM850x:

• 10-year Warranty: Corsair’s 10-year warranty provides a longer period of coverage, demonstrating confidence in their product’s longevity.

Verdict: While both PSUs are built to last, the Corsair RM850x’s 10-year warranty offers a longer period of protection, making it a more attractive option for those seeking maximum peace of mind.

Price: Finding the Right Balance Between Value and Features

When considering the price, both the ASUS ROG Thor 850W and Corsair RM850x fall within a similar price range. However, the ASUS ROG Thor 850W often commands a slightly higher price due to its additional features like RGB lighting and the OLED display.
ASUS ROG Thor 850W:

• Price: Typically priced slightly higher than the Corsair RM850x.

Corsair RM850x:

• Price: Generally more affordable than the ASUS ROG Thor 850W.

Verdict: The Corsair RM850x offers better value for money, providing a high-quality PSU at a more competitive price point. However, if you prioritize the additional features of the ASUS ROG Thor 850W, the slightly higher price might be justified.

Noise Levels: Quiet Operation for Uninterrupted Gaming

Both the ASUS ROG Thor 850W and Corsair RM850x prioritize quiet operation, making them suitable for gamers and content creators who demand a peaceful environment.
ASUS ROG Thor 850W:

• Zero RPM Fan Mode: The fan remains off at low loads, ensuring near-silent operation.

Corsair RM850x:

• Semi-Fanless Operation: The fan only spins up when necessary, minimizing noise levels.

Verdict: Both PSUs offer quiet operation, with the ASUS ROG Thor 850W potentially edging out with its Zero RPM Fan Mode. However, the difference in noise levels is minimal, especially under typical gaming loads.

The Verdict: Choosing the Best Power Supply for Your Needs

Ultimately, the best PSU between the ASUS ROG Thor 850W and Corsair RM850x depends on your specific requirements and priorities.
Choose the ASUS ROG Thor 850W if:

• You prioritize RGB lighting and the OLED display for a more visually appealing setup.
• You’re willing to pay a slightly higher price for these additional features.

Choose the Corsair RM850x if:

• You prioritize a more affordable price point.
• You prefer fully modular cables and a longer 10-year warranty.
• You value a sleek and understated design.

Both PSUs deliver excellent performance, efficiency, and reliability, making them excellent choices for demanding PC builds.

Beyond the Battle: Making the Right Choice for You

While this comparison has highlighted the strengths of both the ASUS ROG Thor 850W and Corsair RM850x, it’s essential to remember that your individual needs and preferences should ultimately guide your decision.
Consider the following factors:

• System Requirements: Ensure the PSU’s wattage rating is sufficient for your components, including your CPU, GPU, and other peripherals.
• Budget: Balance the features and performance with your budget.
• Aesthetic Preferences: If RGB lighting and a unique design are important to you, the ASUS ROG Thor 850W might be a better fit.
• Warranty: A longer warranty provides greater peace of mind for long-term reliability.

What People Want to Know

Q: Can I use a 750W PSU instead of an 850W PSU?
A: While a 750W PSU might be sufficient for some builds, it’s generally recommended to opt for a higher wattage PSU, especially if you plan on upgrading your components in the future. A higher wattage PSU provides more headroom for future upgrades and ensures stable power delivery.
Q: What is the difference between 80 Plus Gold and 80 Plus Platinum certification?
A: 80 Plus Gold certification guarantees a minimum efficiency of 87% at 50% load, while 80 Plus Platinum certification guarantees a minimum efficiency of 92% at 50% load. Platinum-certified PSUs are typically more efficient, reducing energy waste and lowering your electricity bill.
Q: Do I need a modular PSU?
A: Modular PSUs offer greater flexibility and ease of cable management. However, non-modular PSUs are often more affordable. The choice depends on your individual needs and preferences.
Q: How long should a PSU last?
A: A high-quality PSU can last for many years, often exceeding 5-10 years with proper care and maintenance. However, it’s always advisable to consult the manufacturer’s warranty for specific guidelines.