be quiet! Pure Power 13 M 1000W Power Supply, 80 vs be quiet! Straight Power 12-1500w Modular Power
Updated August 2026 — be quiet! Straight Power 12-1500w Modular Power leads on warranty and power output.
The be quiet! Pure Power 13 M offers excellent value for budget-conscious users, while the Straight Power 12 excels in performance and reliability. Choose based on your specific needs.
Why be quiet! Pure Power 13 M 1000W Power Supply, 80 is better
Price
Pure Power 13 M is significantly cheaper.
Efficiency
Higher efficiency rating of 94.4%.
Cooling
Semi-passive cooling for quieter operation.
Why be quiet! Straight Power 12-1500w Modular Power is better
Power Output
Straight Power 12 provides 1500W.
Build Quality
Uses Japanese 105°C capacitors.
Warranty
Comes with a 10-year warranty.
Overall score
Specifications
| Spec | be quiet! Pure Power 13 M 1000W Power Supply, 80 | be quiet! Straight Power 12-1500w Modular Power |
|---|---|---|
| Certification | 80 PLUS Gold | 80 PLUS Platinum |
| Modularity | Modular | Modular |
| Fan Size | 120mm | 135mm |
| Rail Design | Single Rail | Single Rail |
| Connector Support | PCIe 5.1 | PCIe 5.0 |
Dimension comparison
Price Comparison
When evaluating the pricing of the be quiet! Pure Power 13 M 1000W Power Supply and the be quiet! Straight Power 12-1500W Modular Power Supply, the Pure Power 13 M is significantly more budget-friendly. Priced at $139.90, it is about 45% cheaper than the Straight Power 12, which retails for $254.99. This price difference of $115.09 may make the Pure Power 13 M a more attractive option for those building a system on a budget while still seeking high performance.
Efficiency Ratings
In terms of efficiency, the two power supplies differ notably. The Pure Power 13 M boasts an 80 PLUS Gold certification with an efficiency rating of up to 94.4%. In contrast, the Straight Power 12 achieves an even higher standard, with an 80 PLUS Platinum certification and an efficiency rating of up to 93.9%. While both power supplies provide excellent efficiency, the Pure Power 13 M's slightly higher efficiency rating may lead to marginally lower energy costs over time, making it a solid choice for energy-conscious users.
Power Output
The power output of these two models varies significantly. The Pure Power 13 M delivers a robust 1000W of continuous power, which is adequate for most gaming and high-performance systems. However, the Straight Power 12 offers an even more substantial 1500W of continuous power, making it an ideal choice for top-tier setups that require more power for demanding graphics cards and processors. This capability allows the Straight Power 12 to handle massive power excursions with ease, providing an edge for users with high-performance needs.
Cooling Technologies
Both power supplies feature advanced cooling technologies to ensure optimal performance. The Pure Power 13 M utilizes a semi-passive zero-RPM cooling design, which allows the fan to remain off under low loads, promoting silent operation. On the other hand, the Straight Power 12 incorporates a Silent Wings 135mm fan known for its near-silent operation and high airflow efficiency. This fan design not only minimizes noise but also enhances cooling performance, making the Straight Power 12 a better option for users seeking an ultra-quiet system without sacrificing cooling efficiency.
Compatibility with Graphics Cards
When it comes to compatibility with graphics cards, the Pure Power 13 M is designed to support next-generation PCIe 5.1 GPUs and current-gen GPUs through its native integration of the 12V-2x6 connector and four PCIe 6+2-pin connectors. Meanwhile, the Straight Power 12 is compliant with PCIe 5.0 GPUs, offering similar flexibility with its native 12VHPWR connector and four PCIe 6+2-pin connectors. While both power supplies are versatile, the Pure Power 13 M's support for the latest PCIe 5.1 standard may provide better future-proofing for upcoming high-end graphics cards.
Build Quality and Reliability
In terms of build quality, both models are built to high standards. The Straight Power 12 is notable for its use of Japanese 105°C capacitors, ensuring high stability and reliability over time. Additionally, it comes with a 10-year manufacturer’s warranty, indicating a strong commitment to product longevity and customer satisfaction. While the Pure Power 13 M also emphasizes stability with its LLC topology, it lacks the extended warranty period, which may be a consideration for more cautious buyers who prioritize long-term reliability.
Cable Management
The modular design of both power supplies provides an advantage in terms of cable management. The Pure Power 13 M allows for the removal of unnecessary cables, leading to a cleaner and more organized build. This not only simplifies installation but also enhances airflow within the case. Similarly, the Straight Power 12 features modular cable management, which maximizes convenience and promotes an uncluttered setup. Both models excel in this aspect, making them suitable for users who value an aesthetically pleasing and efficient cable layout.
Which should you buy?
Choosing between the be quiet! Pure Power 13 M 1000W Power Supply and the be quiet! Straight Power 12-1500W Modular Power Supply ultimately hinges on your specific needs and budget. If you are looking for a cost-effective solution that offers solid efficiency and sufficient power for mid-range systems, the Pure Power 13 M is an excellent choice at $139.90. However, if your focus is on maximizing performance with high power output, superior cooling, and long-term reliability, the Straight Power 12, despite its higher price of $254.99, may be the better investment. Each model has its strengths, so consider what features matter most to your build before making a decision.

