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FirePower Technology, Inc. > 
Item#: 9SIA4H81E87796

FirePower Silencer MK III 400W 80Plus Bronze Sem-Modular ATX PC Power Supply PPCMK3S400, formerly PC Power & Cooling

  • ATX 12V v2.3
  • Modular
  • 80 PLUS BRONZE Certified
  • 100 - 240 V
  • Pin It
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Building on the award-winning Silencer core architecture, the Mk III once again defines the ultimate power management solution for today’s power users. For the first time, PC Power & Cooling customers can enjoy the convenience and benefits of a modular cable configuration, and eliminate unnecessary wire clutter for a more streamlined computer case.

Combining a powerful single +12V rail and premium components, the Mk III balances the needs of server-class and IT professional standards with 100% Japanese 105°C capacitors, continuous output at a demanding 50°C ambient temperature, and heavy-duty protection circuitries. Key features include a 120mm variable RPM fan for quiet operation, well regulated electrical noise and ripple, and 80 Plus Bronze-level efficiency up to 85% at typical loads. The Silencer Mk III Series is available in 400W, 500W, and 600W models.




  • newegg 80 Plus Bronze certified The 80 PLUS Bronze certified power supply provides high power efficiency of at least 82% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg 400W continuous power with single strong +12V rail The PPCMK3S400 delivers 400W continuous power output at 50-degrees operating temperature. Powerful single +12V rail at up to 30A design ensures the maximum provision of 12V power to energy-hungry CPU and VGA card perfect for future high-end component upgrades or overclocking.
  • newegg Modular cabling design Modular cabling design improves internal airflow and reduces clutter by allowing use of only the cables you need.
  • newegg Premium Components with 100% Japanese Brand Capacitors (105°C) The PSU utilizes highly reliable Japanese brand capacitors for exceptional stability and product lifespan.
  • newegg 120mm variable RPM fan The ultra-quiet 120mm double ball-bearing cooling fan delivers excellent airflow at an exceptionally low noise level by varying the RPM in response to temperature and load.

Learn more about the FirePower Technology, Inc. PPCMK3S400


PC Power and Cooling
Silencer MK III


ATX 12V v2.3
Maximum Power
1 x 120mm, ball bearing, thermally controlled
Main Connector
+12V Rails
PCI-Express Connector
1 x 6+2-Pin
SATA Power Connector
Power Good Signal
Hold-up Time
20 ms min
Up to 85%
80 PLUS BRONZE Certified
Over Voltage Protection
+3.3V, +5V, +12V
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
Input Current
7 - 3.5A
+3.3V@20A, +5V@20A, +12V@30A, -12V@0.8A, +5VSB@2.5A
>100,000 Hours
Safety: cTUVus, CE, CB, FCC Class B, TUV, CCC, C-tick
5.9" x 3.4" x 6.3"
4.74 lbs.


1 x 20+4-pin ATX
1 x 4+4-pin ESP / 12V CPU
1 x 6+2-pin PCI-E
3 x 4-pin Peripheral
6 x 5-pin SATA
1 x FDD
Continuous output rated at a demanding 50ºC ambient temperature

Built with 100% Japanese low ESR 105ºC capacitors for high reliability

A large temperature and load controlled 120mm double ball-bearing fan for whisper quiet operation

ErP compliant for low power usage in standby or off mode.

Heavy-duty protection circuitry, (over-voltage, over-power, and short circuit) for protecting your valuable components

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years

Customer Reviews of the FirePower Technology, Inc. PPCMK3S400

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  • Anonymous
  • 7/12/2013 1:22:01 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Works. Modular.

Cons: The spacing and lengths of the included cables/connectors can be problematic in some setups. Might have to have customs cables made to help reduce the mess in cable management.

Did you find this review helpful? Yes No

  • Philip H.
  • 6/14/2013 9:54:24 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggssweet

Pros: Super quiet. Love the modular a d quiet and big fan

Cons: Nada

Other Thoughts: This is one of the better purchases I have made over the years

Did you find this review helpful? Yes No

  • Aaron W.
  • 5/10/2013 10:18:50 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

5 out of 5 eggsSlick

Pros: Looks great. The white goes really nice with a white case I picked out, and the labeling on the sides looks awesome too. The fan is very quiet and is working great so far. The packaging was fantastic...very nice looking box and it comes with a bag for the extra modular cables...even the PSU came in it's own little bag.

Fully modular except for the mobo and CPU cables, which get connected regardless. The cable connections to the PSU just use clips (same type as CPU and mobo connections) instead of the round screw on type, but they feel very secure regardless.

The labeling/decals are oriented in such a way that they will be right side up regardless of whether you mount the PSU in the top or bottom of the case.

PSU has good weight to it and feels solid, doesn't look cheap at all.

It even comes with a case badge!

Cons: The connections on the SATA cables seem a little too close together...I wanted to use one cable for both the optical drive and the SSD but the connections weren't spaced far enough apart for that. But to be fair, I was using the upper-most 5.25" slot for the optical drive.

Other Thoughts: ASUS P8B75-M LX PLUS
Pentium G2020
8GB G.Skill Sniper
Silencer Mk III 400W

Did you find this review helpful? Yes No

  • Andrew S.
  • 4/10/2013 12:42:36 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsFantastic customer service, great PSU too.

Pros: It's white so it matches my white case. Modular design is great and easy to work with. Plenty of SATA connections and you can buy extras if you want lots of hard drives in a low power cpu rig.

Cons: One of the SATA power connections broke when I was moving drives around, which was a surprise. See other comments for the fix.
The 8-pin cable was a little short for use in the bottom-mount PSU case I have and had to get an extender (no big deal at all)

Other Thoughts: I can do nothing but rave about the customer service - one of the SATA power plugs broke when I was rearranging drives, and a quick email got a replacement on the way from OCZ, no problems at all. Great company.

1 out of 1 people found this review helpful. Did you? Yes No

  • Daniel K.
  • 4/7/2013 10:14:19 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsVery Proffessional

Pros: I can't say how this PS performs. What I can say is that for the price a modular, 105 C, solid capacitor PS is awesome. The packaging shows that the manufacturer cares about their product (or at the very least wants me to believe they do). The PS and cables came individually wrapped in cloth draw string bags! There were zip ties in a small plastic Ziploc bag with an even smaller Ziploc bag inside of the 1st Ziploc containing the screws for install!

Cons: Nothing

Did you find this review helpful? Yes No

  • Joonsoo A.
  • 4/1/2013 2:27:19 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggs6 ports, 5 harnesses -_-

Pros: One thing pretty neat about this PSU is that the side label is always right side up whether you choose ti have the fan on the bottom face or the top face (only applicable to cases with PSU mounting on the bottom). The side label is like an extra plate. Very sexy, durable, not likely to fade.

Very quiet.

Low amount of mechanical vibrations (sound is vibrations too, but you know what I mean)

Cons: There are 6 connection points, two 8pin, four 6pin.
They give you 1 PCIe harness, 3 hard drive harnesses, and one peripheral harness.

That's 5 total. That leaves one 8pin port open. Coincidentally, most GPUs nowadays need two PCIe connectors. I don't get it their reasoning.

Most power requirements for computers have dropped nowadays with intel chips and more efficient GPUs. Maybe the designers were thinking a 400W wouldn't be supplying a single high end graphics card, when they totally do nowadays.

1 port PCIe port empty, 1 PCIe connection needed. Come on, the harness piece prices can't be that expensive.
This one omission of a harness is just bad management decision. Other PSUs come with full harnesses. Why would one want to buy this one to have to hunt down an extra cable, pay shipping for it, delay their build, and get annoyed?

I've harped on that long enough, but it's a pretty silly decision with very little downsides to having it, and a rather sensitive effect on customer satisfaction, and customer's wallet + time.

Other Thoughts: Cables are all black. Not necessarily a positive or negative. Aesthetics. I'll just say that some people prefer having a tinge of color just so it's easier to distinguish harnesses.

Manufacturer Response:

Dear economist,

We fully understand your concerns regarding the inclusion of a single PCIe power cable. If you intend to connect a GPU requiring 2 x 6+2 pin connections I recommend you contact our support to avoid overloading the PSU. For example, in NVIDIA's current 600-series lineup the first reference model GPU that requires 2 x 6 pin is the GTX 660Ti, which also recommends at least a 450W PSU. On the AMD side, the 7000 series models generally require 500W or greater PSU in their reference model system requirements.

We thank you for your purchase and sharing your concerns. We will be glad to help and advise however possible.

Kind Regards,
PCPC/OCZ Support

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  • Robert W.
  • 3/22/2013 11:21:16 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWorks as expected

Pros: Quiet, works, bronze 80 certified, semi modular.

Cons: Relatively expensive even with the rebate.

Other Thoughts: It took 9 days from the time I ordered it to the time it arrived as it was shipped from the east coast and I'm on the west coast. Granted, I didn't pay for expedited shipping, but even the Pony Express could deliver a letter cross country in 10 days.

Did you find this review helpful? Yes No

  • Martin R.
  • 3/19/2013 6:42:52 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsGood PS

Pros: Working as desired, features indicate a long lasting device - will find out in a couple of years if the promisse is kept.
Nice features to have the cables plugable.

Cons: Internal cables - like HDD connectors - are quite stiff, which makes assembly in narrow space difficult. There is quite some tension on my hard drive connectors.

Did you find this review helpful? Yes No

  • Robert R.
  • 3/12/2013 2:21:19 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsImpressed

Pros: modular, high A on single 12V rail, sturdy, good presentation, 80+ bronze.

Cons: Would like one more cable. It is 1 or 2 cables short of all the connectors it has available, though I had plenty to independently hook up my DVD, HDD, mobo, and CPU. Looks like there's clear plastic inside blocking about 1/3 of the fan; apparently this is normal for PSU manufacturers to direct airflow, but why not just use a smaller inlet and fan; it's just odd.

Other Thoughts: 1 cable included is for the old molex 4-pin connections. I assume the fan sucks in from inside the case and blows out; if you watch the video they tout how the writing is right-side-up no matter it's installation, so I guess it won't matter for the fan either.

Did you find this review helpful? Yes No

  • Fred D.
  • 3/12/2013 12:07:09 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggs

Pros: Semi Modular

Cons: Ran 4 days , then wouldn't power up.

Other Thoughts: I wouldn't recommend this power supply.
I had to pay the return postage on a defective product.

Manufacturer Response:

Dear Fredco,

We are very sorry to hear about your experience with the first unit. If you experience any issues at all with the replacement please contact us directly and we will help you test and get the replacement working properly.

Thank you for your purchase and we are very sorry for the inconvenience.

Kind Regards,
Product Support

Did you find this review helpful? Yes No

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FirePower Technology, Inc. > 
Item#: 9SIA4H81E87796
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