Product Overview:

Drive your computer to the max on the back of PC Power & Cooling’s flagship line of Silencer MkIII power supplies featuring rock solid and stable power with ultra-quiet operations.   For over 3 decades, PC Power & Cooling has delivered unrivaled performance to our customers. Eliminate wire clutter by using our semi-modular cables.

What’s Inside:

The Silencer architecture balances the needs of enthusiasts and professionals by combining a powerful single +12V rail, 100% Japanese 105°C capacitors, continuous output at a demanding 50°C ambient temperature, and heavy-duty protection circuitries. The ultra-quiet operation gives Silencer its name. The MkIII varies the fan’s RPM by load and temperature for whisper quiet operation. The Silencer MkIII series is 80 Plus Bronze certified allowing the PSU to operate at 85% efficiency to ease your energy costs.


Backed by our 5-year warranty, the Silencer MkIII is the ultimate power plant for your PC as you will enjoy strong, powerful, reliable and quiet operation while you drive your PC and its applications to the max.


Content &


  • Total Max Power: 400 W @ 100 – 240Vac
  • Auto correcting circuitry provides universal AC input from 100V – 240V
  • Supports ATX12V 2.4/2.3/2.2/2.01 standards
  • Dimension: 150 mm x 86 mm x 160 mm (W x H x D) (5.9” x 3.4” x 6.3”)

Package Contents

  • Product Manual
  • 4 x Mounting Screws
  • 18AWG Power Cord
  • 10 x Nylon Cable Ties
  • Case Badge
  • Cable Pouch


  • Ease of installation
  • 80-Plus Bronze Certified (85% Efficiency)
  • 5-Year Warranty
  • US Technical Support
  • Temperature Range: Operating 0℃ – 50℃
  • 120mm ball-bearing fan, varies RPM by load and temperature for whisper quiet operation
  • Active Power Factor Correction (PFC) to effectively regulate input voltage
  • Single +12V rail for efficient power distribution in your system
  • Premium Components with 100% Japanese 105°C Capacitors
  • Semi-Modular Cable Configuration

Warranty and Languages

Warranty5 years
LanguagesEnglish, German, Spanish, French, Italian, Russian, Japanese, Chinese

Input Specifications

Input VoltageInput FrequencyInput CurrentPower Factor

100-240 Vac Full Range

50-60 Hz

7A (rms) for 115 Vac
3.5A (rms) for 230 Vac

Active PFC

Output Specifications

VoltageRegulationMax LoadRipple & NoiseProtection




50 mVp-p





50 mVp-p





120 mVp-p





120 mVp-p




50 mVp-p

Environmental Specifications


Operating: 0 to 50-degree C, Storage: -40 to 85-degree C

Operating: 20%-80%, Storage: 10%-95%

120mm, ball bearing fan varies RPM by load and temperature for whisper quiet operation

General Specifications

Hold-up TimeEfficiencyMTBFOutput Connector


at least 85% @ 50% load, 80 Plus Bronze

100,000 hours

20+4-pin ATX, 4+4-pin CPU, 1 PCI-E, 6 SATA, 3 Peripheral, 1 Floppy

Safety & regulations


Best buy 400-450 watts

If you want an affordable modular PSU, out of 4 options, the OCZ [PC Power and Cooling] Silencer Mk III 400W is the best choice based on the test results. Both Be Quiet and OCZ’s [PC Power and Cooling] entry are very quiet, have a very low ripple and are more than 85 percent efficient. We prefer the OCZ [PC Power and Cooling] power supply due to the better voltages and slightly lower price.

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Tech-Review (Germany)

“Thanks to its white design and black ribbon modular cable management the Silencer MK III is a real eye catcher. The performance is absolutely perfect for a power supply within this price range. Direct competition for this power supply is virtually nonexistent. The best deal is this PC Power & Cooling power supply – the price/performance ratio is just right!

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Xtreme Hardware (Italy)

“We are very satisfied with the MK III Silencer 400W from PC Power & Cooling. We really liked the white finish, modularity, and performance. This power supply simply cannot fail to satisfy you. Commendable is the presence of Japanese capacitors certificates to 105 ° C, a rarity in a 400W model. Excellent is also the +12 V rail which allow the use of fairly powerful video cards, such as the HD 6850. In addition the efficiency is very good and it even comes with a remarkably high warranty of 5 years.

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Hardware Journal (Germany)

“Power supply veteran, PC Power & Cooling has expanded its range with an efficient, Bronze Certified range. The new MKIII Series are semi-modular and have a very nice design. This model also uses the popular flat ribbon cables which have proven to be exceptionally flexible. As expected, the 400W model that we tested performed very well in our benchmarks and positions itself in the top of its class. With a fan that is rarely perceived, even at a high load, we can safely say that the MKIII 400W is a silent power supply. The voltages remained very stable with only marginal variations between idle and full load. Due to its superior performance and affordable price we give the MKIII our Gold and Price-Performance award.

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