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be quiet! Pure Power 13 M 850W Power Supply vs ASUS ROG Strix 1200W Platinum

Updated August 2026The be quiet! Pure Power 13 M offers excellent value with quiet operation and solid efficiency, while the ASUS ROG Strix Platinum excels in power, cooling, and warranty for high-end builds.

The be quiet! Pure Power 13 M offers excellent value with quiet operation and solid efficiency, while the ASUS ROG Strix Platinum excels in power, cooling, and warranty for high-end builds.

Why be quiet! Pure Power 13 M 850W Power Supply is better

Price

C$173.21 vs C$329.99, more affordable

Noise Level

Semi-passive zero-RPM cooling for silent operation

Efficiency Cert

80 PLUS Gold certification with up to 94.4% efficiency

Why ASUS ROG Strix 1200W Platinum is better

Power Output

1200W vs 850W, higher capacity

Warranty

10-year warranty vs unspecified

Cooling Tech

Large heatsinks and dual ball bearings for better thermal and longevity

Overall score

be quiet! Pure Power 13 M 850W Power Supply
72
ASUS ROG Strix 1200W Platinum
85

Specifications

Specbe quiet! Pure Power 13 M 850W Power SupplyASUS ROG Strix 1200W Platinum
PriceC$173.21C$329.99
Power Output850W1200W
Efficiency Cert80 PLUS Gold80 PLUS Platinum
CoolingSemi-passive zero-RPM fanLarge heatsinks, dual ball bearings
CompatibilityATX 3.1, PCIe 5.1 readyATX 3.1, PCIe 5.0 ready
WarrantyNot specified10 years
Noise LevelVery quiet (zero-RPM cooling)Low noise with 0dB tech

Dimension comparison

be quiet! Pure Power 13 M 850W Power SupplyASUS ROG Strix 1200W Platinum

Price Comparison

When it comes to price, the be quiet! Pure Power 13 M 850W Power Supply is significantly more affordable than the ASUS ROG Strix 1200W Platinum. The Pure Power 13 M is priced at C$173.21, while the ROG Strix Platinum comes in at C$329.99. This represents a difference of C$156.78, making the be quiet! model a more budget-friendly option, particularly for gamers or builders looking to save costs while still achieving solid performance.

Efficiency Ratings

Efficiency plays a crucial role in power supplies, and here the be quiet! Pure Power 13 M holds an 80 PLUS Gold certification, boasting an impressive efficiency rating of up to 94.4%. This high level of efficiency translates to lower power consumption and reduced energy costs. In contrast, the ASUS ROG Strix Platinum is even more efficient with an 80 PLUS Platinum certification. This means it utilises low-ESR capacitors and premium components, offering superior power efficiency, but specific figures on its efficiency rating are not disclosed. The ROG Strix Platinum’s efficiency can exceed that of the Pure Power 13 M, making it an excellent choice for those prioritising energy savings.

Power Output

Power output is an important factor, especially for high-performance systems. The be quiet! Pure Power 13 M delivers a continuous power output of 850W, which is suitable for most gaming and media creation setups. On the other hand, the ASUS ROG Strix Platinum provides a higher output of 1200W. This substantial 350W difference allows for more extensive system configurations, accommodating multiple high-end components without the risk of power shortages. For build enthusiasts looking for maximum power capacity, the ROG Strix Platinum is the clear winner.

Cooling Technology

Both power supplies feature advanced cooling technologies, but they approach the challenge differently. The be quiet! Pure Power 13 M employs semi-passive zero-RPM cooling, allowing the fan to turn off entirely under low loads, resulting in an exceptionally silent operation. In contrast, the ASUS ROG Strix Platinum utilises large ROG heatsinks and dual ball fan bearings, which extend the lifespan of the fans and improve thermal performance. While the Pure Power 13 M is designed for silence, the ROG Strix Platinum focuses on maintaining lower temperatures and noise levels during intense gaming sessions, making it ideal for high-performance rigs.

Compatibility

Compatibility with new technologies is essential for future-proofing your system. The be quiet! Pure Power 13 M is ATX 3.1 compliant and includes a native 12V-2x6 connector, ensuring it supports next-generation PCIe 5.1 graphics cards. Similarly, the ASUS ROG Strix Platinum also meets ATX 3.1 standards and features a native 12V-2x6 connector for PCIe 5.0 ready graphics cards. Both supplies are well-equipped for current and future systems, but the ROG Strix Platinum may offer slightly more advanced voltage regulation, enhancing overall performance for the latest hardware.

Longevity and Warranty

Warranty offers insight into the manufacturer's confidence in their product's durability. The be quiet! Pure Power 13 M does not specify a warranty period, which could raise concerns for some users. In contrast, the ASUS ROG Strix Platinum boasts a robust 10-year warranty, reflecting its high-quality components and reliability. This extended warranty could provide peace of mind for buyers investing in a more expensive unit, as it underscores the manufacturer's commitment to long-term performance.

User Experience and Design

User experience can significantly influence the decision between these two power supplies. The be quiet! Pure Power 13 M is designed for silent operation, making it an excellent choice for users prioritising a quiet environment. Its airflow-optimised fan blades further enhance its low-noise performance. On the other hand, the ASUS ROG Strix Platinum is built for gamers, featuring a sleek design with RGB elements, which appeals to those wanting to showcase their gaming rig. The choice here depends largely on personal preference: whether one values quiet operation or eye-catching aesthetics.

Which should you buy?

In conclusion, the choice between the be quiet! Pure Power 13 M 850W Power Supply and the ASUS ROG Strix 1200W Platinum largely depends on your specific needs and budget. If you prioritise cost-effectiveness, high efficiency, and quiet operation, the be quiet! model is an excellent choice at C$173.21. However, if you require higher power output, superior cooling, and a longer warranty, the ASUS ROG Strix Platinum at C$329.99 might be worth the investment. Each power supply has distinct advantages that cater to different user preferences, making either a valid option based on your requirements.

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