Review Index:

PC Power and Cooling Silencer 750W Quad PSU - CrossFire Edition

Manufacturer: PC Power & Cooling

Introduction and Features

The new PC Power & Cooling Silencer 750 Quad CrossFire edition power supply features a single, high-capacity +12V rail capable of delivering up to 60A (720W).  The Silencer 750W CF is painted bright red, comes with four PCI-E connectors (two 6-pin and two 6/8-pin) and not surprisingly is ATI CrossFire certified.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />



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.  The Silencer 750 Quad PSU is now available in three different colors: red, black and copper.



Silencer 750W Quad CrossFire Edition 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)

  • ATI CrossFire certified (HD 2900XT)

  • 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 CF 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


The Silencer 750W CF 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)

  • 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 407738 digital sound level meter (Accuracy ±1.5 dB)

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


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