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PC Power & Cooling Silencer 750 Quad Power Supply Review

Manufacturer: PC Power & Cooling

Introduction and Features

PC Power & Cooling has been in the business of building high-performance PC switching power supplies since 1986 and they have earned one of the best reputations in the industry for performance and reliability.  Today PC Power & Cooling offers several lines of high-quality power supplies ranging in capacity from 300W all the way up to 1kW.  Their Turbo-Cool units are targeted towards high-end applications where clean power and reliability are the top priorities.  PC Power & Cooling's Silencer power supplies also feature performance and reliability but with an emphasis on quiet operation at an affordable price.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />


In this review we will be taking a detailed look at PC Power & Cooling's flagship Silencer power supply, the Silencer 750 Quad.  This unit is available with either a traditional black paint job or with a brilliant copper finish.



The PC Power & Cooling Silencer 750 Quad power supply features a single, high-capacity +12V rail capable of delivering up to 60A (720W).  The Silencer 750W comes with four PCI-E connectors and not surprisingly is NVIDIA SLI and ATI CrossFire certified.


PC Power & Cooling Silencer 750 PSU Key Features:


  • 750 watt continuous power output (825W peak)

  • Quiet: up to 90% less noise per watt

  • Automatic fan speed control circuit (single 80mm fan)

  • NVIDIA SLI and ATI CrossFire certified

  • High efficiency operation (up to 83%)

  • Powerful single rail +12V output (up to 60A)

  • Rock solid, super clean DC outputs

  • 24-pin, 8-pin, and 4-pin motherboard connectors

  • Quad PCI-E and 15 peripheral drive connectors

  • Active PFC with Universal AC line input

  • 3-Year warranty 

The Silencer 750W Quad power supply comes securely packed in a traditional PC Power & Cooling box. 



The bundled accessories include a heavy duty power cord, mounting screws, and printed Installation Instructions.



Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective's power supply test bench can place a precise 2,000 watt 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

  • DC Line Regulation

  • DC Cross-load (unbalanced load)

  • AC Ripple and Noise

  • Power Factor

  • Efficiency

  • Differential Temperature

  • Noise

  • Size and Weight


The Silencer 750W 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 ouputs)

  • (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)

  • (2) Custom-built, precision +12V loads (+12V5 and +12V6)

  • FLUKE 87-III True RMS digital multimeter (Accuracy ±0.05%)

  • Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)

  • <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Hitachi V-650F 60 MHz dual trace oscilloscope (Accuracy ±3%)

  • Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC

  • FLUKE  52-II digital thermometer (Accuracy ±0.3ºC/0.5ºF)

  • Extech Model 407736 digital sound level meter (Accuracy ±1.5 dB)

  • AccuLab V1-10kg digital balance (Accuracy ±1g)

  • Custom Lian Li PC60 enclosure to simulate real-world operating conditions

(CSI Programmable DC Loads)                (Extech AC Power Analyzer)


OK, it's not quite the same as the $100,000 Chroma 8000 that PC Power & Cooling uses, but for us mere mortals it's the next best thing!


(PC Power & Cooling's Chroma 8000 PSU Test Rig)



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