Introduction and Features

Be Quiet! is a market leader for PC power supplies in Germany and they are bringing their top-of-the-line Dark Power Pro 10 series to the USA.

Be Quiet! has been a market leader for PC power supplies in Germany for seven years straight and they are bringing their top-of-the-line Dark Power Pro 10 series to North American markets.  The Dark Power Pro 10 series includes six different models ranging from 550W all the way up to 1200W. The focus of the Dark Power Pro series is “no compromise silence and performance”. All Dark Power Pro 10 power supplies are certified for 80Plus Gold efficiency except for the 850W model, which achieves 80Plus Platinum efficiency levels.

Be Quiet! is targeting the Dark Power Pro series for high resolution gaming, 3D graphics, photo and video editing, and multimedia systems that incorporate overclocked components with multiple CPUs and up to four GPUs.

Dark Power Pro 10 Highlights:
• Virtually inaudible SilentWings 135mm fan
• World class efficiency of up to 94%
• Top performance and stability for CPU and GPU
• Overclocking key for multi or single rail use
• Professional cable management
• Five year warranty

Here is what Be Quiet! has to say about their Dark Power Pro series: “Legendary Silence, Cutting Edge Performance! Dark Power Pro series power supplies are renowned as the world’s quietest PSUs in the high performance category. They range in capacity from 550W to 1200W, feature astonishingly high power efficiencies, and are appropriate for the world’s toughest computing tasks – particularly where quiet is as much a priority as raw power.

The Dark Power Pro 10 850W model takes a giant step further with an all-new design topology that delivers 80Plus Platinum performance, the world’s highest energy efficiency certification. Add to that an unparalleled array of enhancements that augment this unit’s compatibility, convenience of use, reliability, and safety, and the result is simply a power supply without equal. Simply put, this is the highest-powered, most technologically-advanced power supply be quiet! has ever built.

Be Quiet! Dark Power Pro 10 850W PSU Key Features:

• Legendary Silence, Cutting Edge Performance
• Virtually silent operation – custom designed 135mm SilentWing fan
• SilentWing fan features airflow optimized blades and fluid dynamic bearings
• 80Plus Platinum and up to 94% power conversion efficiency
• 850 Watts of continuous power
• NVidia SLI and AMD CrossFireX multi-GPU certifications
• Professional cable management with extra-long cable reach
• Overclocking key allows switching between single and multi +12V rail operation
• Haswell ready – support for Intel’s fourth generation CPUs with C6 & C7 sleep states
• Dual-layer PSU housing with rubberized sleeves isolates noise and vibration
• Up to four case fans can be connected to and controlled by the PSU
• Active PFC (0.99 PF typical) with Universal AC input
• 5-Year warranty

PSU Testing Methodology

Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective’s power supply test bench can place a precise DC load on the PSU under test.  Each power supply is tested under controlled, real-world conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage.  Our current suite of tests includes:

• DC Load Regulation
• AC Ripple and Noise
• Efficiency
• Differential Temperature
• Noise

The Dark Power Pro 10 850W power supply was evaluated on both features and performance.  A full range of equipment was used to test the power supply under controlled load conditions. 

• (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)
• (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)
• (2) 200W Precision resistor load bank (+12V5 and +12V6)
• Switchable precision resistor load bank (-12V and +5VSB)
• Agilent 34401A digital multimeter (Accuracy ±0.0035% vDC)
• Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)
• DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)
• Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
• Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)

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