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be quiet! · 850 W · ATX

be quiet! Pure Power 12 M 850W

ATX 3.1 · 80 PLUS Gold · Modular

Capability: 78
Cap / price: 71
Wattage value: 62
Amazon: $110

View be quiet! Pure Power 12 M 850W Gallery in high resolution

Available on Amazon Updated Aug 30, 2026

Capability77.6

Capability / price70.6

Wattage value61.9

$110 on Amazon PSU table Compare this PSU

Size this PSU for a complete buildThe Builder unlocks PSU choices after it knows the CPU, GPU, case format, and estimated demand. Calculate build power first

Written analysis

be quiet! Pure Power 12 M 850W at a glance

The be quiet! Pure Power 12 M 850W is a 850 W ATX power supply built to the ATX 3.1 generation. Efficiency is listed as 80 PLUS Gold. Cables are modular.

The calculated capability score is 77.6, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 10 years. +12V output is 76 A.

Best fit: Performance desktops whose calculated component load fits comfortably within a 750–999 W supply.

Platform and cooling

Dimensions are listed as 160 x 150 x 86. Cooling fan size is 120 mm. The unit uses 2 +12V rails at up to 40.00 A per rail. Certifications include 80 PLUS Gold.

Current value

At $110, price per kilowatt is $129.29. Capability / price is 70.6 and wattage value is 61.9. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer: be quiet!
PSU: be quiet! Pure Power 12 M 850W
Launch price: —
Amazon price: $110
Amazon availability: Available
Price updated: Aug 30, 2026

Power & efficiency

Wattage: 850 W
Efficiency: 80 PLUS Gold
Recorded efficiency: 92%
Warranty: 10 years

Value

Amazon price: $110
Price / kW: $129.29
Capability: 77.6
Capability / price: 70.6
Wattage value: 61.9

Platform & size

ATX generation: 3.1
Form factor: ATX
Dimensions: 160 x 150 x 86
Modular: Yes
Fanless: No

Electrical

Input voltage: 100-240
+12V output: 76 A
+5V output: 22 A
+3.3V output: 22 A
+12V rails: 2
Max amps / rail: 40.00 A

Cooling & build

Fan size: 120 mm
Fan stop: No
Certifications: 80 PLUS Gold

Additional information

Also listed as: Pure Power 12 M 850W

Amazon

Price history

Nearby capability

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be quiet! be quiet! Pure Power 12 M 850W This PSU

77.6

70.6

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$110

be quiet! be quiet! Pure Power 12 M 850W 850 W · ATX · Modular

77.6

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Thermaltake Thermaltake Toughpower PF3 ATX 3.0 850W 80+ Platinum 850 W · ATX · Modular

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MONTECH MONTECH Century II 850W 850 W · ATX · Modular

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

Exceptionally Efficient & Cost-Saving - 80 Plus Gold certified be quiet! 850W PSU with up to 93.0% efficiency, reducing energy waste and operating costs. Generates less heat, prolonging component lifespan and ensuring cooler operation for high-performance PCs.

Future-Proof with ATX 3.1 & PCIe 5.1 Support - PSU 850W gold computer power supplies designed for next-gen GPUs and gaming systems, featuring PCIe 5. 12V-2x6 600W connector and 4x PCIe 6+2 connectors. Ensures seamless compatibility with current and upcoming graphics cards.

Unmatched Power Stability & Reliability - Provides 850W continuous power with dual 12V rails for exceptional stability. Handles transient power spikes up to 2000W, delivering uninterrupted performance for demanding gaming and workstation setups.

Ultra-Quiet Operation with 120mm be quiet! Fan - This 850W PSU gold is silence-optimized cooling with temperature-controlled speed adjustments and airflow-optimized blades, ensuring near-silent performance even under heavy loads. Ideal for noise-conscious users.

Fully Modular Cables for a Clean Build - Enjoy easy cable management and improved airfloW with fully modular cabling. Removes clutter, enhances cooling efficiency, and simplifies installation for clean and professional PC builds.

be quiet! Pure Power 12 M 850W at a glance

Platform and cooling

Current value

General

Power & efficiency

Value

Platform & size

Electrical

Cooling & build

Additional information

Price history

Similar PSUs

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