be quiet!
Power Supply
be quiet! Pure Power 12 M 850 W 80+ Gold
Key Features
Fully Modular
Silent Operation
High Efficiency
MSRP:
$139
Technical Specifications
Manufacturer
be quiet!
MSRP
$139
Type
ATX
Wattage
850 W
Efficiency Rating
80 PLUS Gold
Modular
Yes
Color
Black
Fanless
No
Dimensions
160mm x 150mm x 86mm
Length
160 mm
Connectors
Atx 4 Pin: 0 • Eps 8 Pin: 2 • Pcie 16 Pin 12Vhpwr: 1 • Pcie 12 Pin: 0 • Pcie 8 Pin: 0 • Pcie 6 Plus 2 Pin: 4 • Pcie 6 Pin: 0 • Sata: 6 • Amp Molex 4 Pin: 2
Release Year
2024
Pros & Cons
Pros
- Excellent 850W capacity for high-end gaming with RTX 4080/4090 class GPUs
- Provides comfortable headroom for overclocking
- Fully modular design enables custom cable configurations
- Reduces cable clutter and improves airflow significantly
- Good 80 PLUS Gold efficiency provides reliable power delivery
- Specialized in silent operation and premium cooling solutions
- PCIe 5.0 connector ready for next-generation GPUs
- Future-proof connectivity for RTX 5000 series and beyond
Cons
- Longer 160mm depth may not fit in compact cases
Community Insights
- Many users appreciate the PSU’s support for ATX 3.0 and PCIe 5.0, including the inclusion of a 12VHPWR connector—making it fully compatible with high-end RTX 40 series and future GPUs. This future-proofing is a highlight in user discussions.
- While most users agree the unit is quieter than average, there are discussions noting it isn’t the absolute quietest in the 850W class. Some users coming from premium silent models (like the Corsair RMx series) notice the difference, but most still rate its noise levels positively.
Frequently Asked Questions
Is the be quiet! Pure Power 12 M 850W suitable for RTX 4090 or similar high-power GPUs?
Yes, it supports up to 600W on the 12VHPWR connector, making it fully compatible with modern, high-end GPUs like the RTX 4090.
Is the Pure Power 12 M 850W fully modular?
Yes, it is fully modular, allowing users to connect only the cables they need for a cleaner and more organized build.
Performance Guide & Use Cases
Best For
High-end gaming with RTX 4080/4090 class GPUs (850W)
Content creation and workstation builds (850W)
Next-generation GPUs and future-proofing (PCIe 5.0)
RTX 5000 series and modern GPU compatibility
Standard ATX builds and mainstream systems
Custom cable management and clean builds (modular)
Overkill Scenarios
Budget gaming systems with entry-level GPUs (850W)
Office productivity without high-performance components (850W)
Basic web browsing and document editing systems
Media streaming and light productivity tasks
Avoid For
Mini-ITX and compact case builds (ATX too large)
PCHelperAI may earn a commission from purchases made through affiliate links to participating retailers on this site. This compensation does not influence the products shown, pricing, or the order in which prices appear. For more details, please see our full disclosure.