be quiet! has long been a household name for PC enthusiasts who value pairing whisper quiet PC hardware, with award-winning performance. The clue is in the name “be quiet” and this relentless focus on quality and quiet performance is seen across their full range of PC cases, coolers, fans, power supplies, and even their peripherals. The Pure Power series is a popular choice for PC gamers and enthusiasts, and now with the release of the new Pure Power 13 M series power supply, that trend is sure to continue. Designed for high-end gaming systems and power-hungry workstations that demand the latest in power delivery standards, it comes with full ATX 3.1 and PCIe 5.1 compliance, built to handle the massive power spikes of modern GPUs with ease, and the demands of the latest high-end processor, all while maintaining the rock-solid stability that be quiet! are known for, at least on paper, we will of course be putting it to the test shortly.
be quiet! Pure Power 13 M 1200W
The Pure Power 13 M comes in six variants, with a 550W, 650W, 750W, 850W, 1000W and the flagship 1200W. We have the 1200W in for testing today, which features an 80 PLUS Gold certification, ensuring efficient performance while you’re working and gaming. It features fully modular cable management, which is perfect for maintaining a clean aesthetic in your gaming PC, and optimal airflow within your system. Furthermore, the unit incorporates a be quiet! 120mm silence-optimised fan, but we wouldn’t have expected anything less! With support for zero-RPM at lower loads and temperatures, it’ll be silent for daily work loads, only spinning up while your doing more heavy duty tasks such as gaming.
Key Features
- 80 PLUS® Gold efficiency (up to 93.5%)
- ATX 3.1 PSU with full support for PCIe 5.1 GPUs and GPUs with 6+2 pin connectors
- Handles massive power excursions
- Exceptionally silent semi-passive 120mm be quiet! fan
- Semi-passive construction for quiet and energy-saving operation
- LLC technology for advanced stability and voltage regulation
- One massive high-performance 12V-rail
- One PCIe 5.1 12V-2×6 with up to 600W and up to 4 PCIe 6+2 connectors for overclocked high-end GPUs
- Full suite of safety features
- Meets latest requirements for modern standby
- 10-year manufacturer’s warranty
On the technical side, this 1200W power supply utilises a single high-performance 12V rail to ensure maximum stability for high power draw systems, and no need to balance the rails, which people don’t really care to do in 2026. It is equipped with a comprehensive suite of safety protections, such as OTP, OCP and OPP, and thanks to it’s 80 Plus Gold efficiency, it should be pretty cost effective to run on more demanding systems too, which is great.
Technical Specifications
- Continuous Power: 1200W
- Efficiency Certification: 80 PLUS Gold
- Standard Compliance: ATX 3.1 / EPS 12V v2.92
- Cooling: 120mm Silence-Optimised Fan
- Protections: OCP, OVP, UVP, SCP, OTP, OPP
- Topology: LLC + SR + DC/DC
- Input Voltage: 100 – 240 Vac
- Dimensions (L x W x D): 160 x 150 x 86 mm
- Warranty: 10 Years
For more details check out the official product page here. Of course, you can keep reading the rest of this review too!
About the Author
