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Item#: N82E16817256041

SILVERSTONE ST1200 1200W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Modular Active PFC Power Supply

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  • ATX12V / EPS12V
  • Modular
  • 80 PLUS Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@40A, +5V@40A, +12V1@28A, +12V2@28A, +12V3@20A, +12V4@20A, +12V5@20A, +12V6@28A, -12V@0.8A, +5VSB@6.0A

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The 1200W ST1200 from Silverstone provides the power you need for your most intense applications. It can continuously deliver the full 1200W at 80-87% efficiency. Six +12V rails balance your power load with ease. The auto-switching input can handle all common voltages so all you have to do is plug it in.

The power connectors are fully modular, letting you use only the connections you need. There's a handy carry bag for the extra cables; that way you'll have them available when you upgrade. The cables are all sheathed to de-clutter the inside of the case, enhancing airflow.

A 135mm fan on the bottom of the PSU moves extreme amounts of air to keep everything cool. The back panel is a honeycomb mesh broken only by the power plug and an indicator LED for virtually unrestricted airflow. Go ahead; build the system of your dreams, the ST1200 can handle it.

  • newegg ATX12V and EPS12V Compatible Compatible with the ATX12V and EPS12V standards, the Silverstone ST1200 provides maximum power stability to drive the latest Intel and AMD processors as well as other components for desktop and server computer systems.
  • newegg 1200W Maximum Power A maximum power of 1200W delivers safe, reliable output for even the most extreme computer systems.
  • newegg 80 Plus Certified The 80 PLUS certified power supply provides high power efficiency of at least 80% 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 Supports Three VGA Card System Featuring two 8/6-pin and four 6-pin PCIe power connectors, the Silverstone ST1200 supports up to three high-end graphics cards for extreme gaming systems.
  • newegg Efficient Cooling A 135mm ball bearing fan plus hexagon cutouts increases overall airflow in the power supply enclosure and helps remove heat from the chassis simultaneously.
  • newegg Modular Cable Management The modular cable design allows use of only the cables you need resulting in improved internal airflow and reduced system clutter.

Learn more about the Silverstone ST1200

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the Silverstone ST1200

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  • Garrett C.
  • 12/5/2014 3:13:36 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs3 Years still going strong!

Pros: Modular, only have cables for what you have installed.

Two graphics cards, a dozen fans, 2x DvD drives, 3x HDDs, 1x SSD, 1x SAS, i7 920. Pretty sure I'm using every cable that came with it, my computer gets left on for long periods of time or is in use almost every single day. It's been 3 years and I've replaced a lot of components except this power supply. Still going strong

Cons: None

Other Thoughts: No on/off switch on the back, you have to unplug it if you want to cut the power ( not a Con for me, but some people might not like this )

Did you find this review helpful? Yes No

  • Radomir J.
  • 4/23/2014 11:09:10 PM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsSolid during the warranty period

Pros: This ran 3 GTX 470 cards with an overclocked i7 and then an overclocked 6-xore Xeon for just over 3 years before it exploded. Upon its explosion with black smoke everywhere, it didn't kill anything else in the computer.

Cons: I bought this near the end of October 2011, and in the middle of April 2014, it died. I had even gone down from 3 GTX 470 cards to one GTX 770. The capacitors seem to have aged really rapidly.

Other Thoughts: It sort of makes sense that this exploded after the 3-year warranty ended because I didn't need that much power after upgrading to more efficient tech. I would have been very disappointed having purchased a power supply of more sensible output that died while being still able to run my latest tech.

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3 out of 5 eggsBad fan cover

Pros: Works well, high wattage, modular

Cons: The fan cover holes are too big, making it easy to drop screws into it. Even with extreme care this has been a problem a couple of times, which makes me not happy.

Improving the design of the fan cover would improve this drastically.

Also, the fan placement is odd and doesn't really work totally in any configuration, which is a bit disappointing.

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  • David L.
  • 8/9/2012 10:38:37 AM
  • Ownership: 1 month to 1 year

3 out of 5 eggsWarning about Silverstone PSU

Pros: - looks pretty
- seems to be of good quality
- heavy
- relatively quiet
- did not kill motherboard when it died
- someone at RMA department will help you eventually

Cons: - durability (lasted a few months)
- only a 3 year warranty for higher end products and 1 year for low end
- expensive when shipping cost for RMA is considered

Part 1:
I have an Olympia 850W unit in my client's desktop which died within a few months of light use. I have used exclusively C0rsa1r, Seas0n1c, and Ant3c PSU in the past and PC P&C recently for client builds. Thought it would be a good idea to try something new so I have more options in future builds. Bad idea. Was thinking about the 3 year warranty period and why not 5 like everyone else? The Olympia unit is on its way back to SilverStone in Cali and it seems they will send me another one of the same model which I am confident won't last any longer after some research.

Other Thoughts: Part 2:
It is a shame, because this same client, who runs an upscale internet cafe, wants me to replace 60 high end machines in his shop before Christmas. Silverstone has a few products that I am interested in for this project, but given its track record and my reputation at stake, I may want to be conservative and not recommend any Silverstone to clients for the time being. I hope Silverstone will not let me down again by sending me another defective product. If Silverstone is willing to make it right and send me a PSU that last, I will take this review back. Will see how this RMA goes.

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

  • Rick D.
  • 7/18/2012 11:15:12 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsNot Happy with Silverstone

Pros: Great PSU, works, well packaged. No complaints about the product that I wasn't aware of before purchasing.

Cons: I submitted all three labels from box with rebate package. I get this curt little snail-mail notice some weeks later stating that I provided "incorrect UPC label." Okay, $25 isn't going to devestate anybody's financial empire, but this is just insult added to injury after submitting a comprehensive rebate package.

Manufacturer Response:

Thank you very much for purchasing a SilverStone. The label you sent in was Newegg's label, not SilverStone's so that is why we cannot process it. Since we process mail in rebates in-house, please contact us directly so we can help you get this sorted out. Our US office contact information is as follows:


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

  • michael d.
  • 6/4/2012 12:40:57 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsREAD the PCIe video cable labels and match them exactly to the diagram on PSU

Pros: In reference to my last review, the PCIe video power cables have a distinct order that they have to be plugged into the PSU. You can plug them in the wrong order and you won't get the power you need for the watt sucking video cards and your computer will shut off if the video cards are benchmarked. My motherboards USB controller also got knocked out on reboot and stayed like that. Only clearing the RTC on the board fixed it. Resetting the BIOS did nothing.

Cons: This PSU is not idiot proof because the 8 pin and 6 pin PCIe video cables BOTH have 8 pin connectors to the PSU.

Did you find this review helpful? Yes No

  • michael d.
  • 6/2/2012 1:51:04 PM
  • Ownership: 1 day to 1 week
  • Verified Owner


Pros: 1200 Watts
100% Modular

Cons: Unlike most PSUs that you can pretty much just plug modular cables in wherever they have a open matching female connector on the PSU.

Other Thoughts: Resetting the BIOS got me back to the Enter BIOS screen but ALL my USB ports were knocked out so I couldn't Hit F1 to get into it. I finally cleared the RTC via a jumper on the board and all was right with the world again.


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  • sean m.
  • 3/23/2012 6:11:10 AM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsDecent but issue

Pros: Price per watt is exceptional.
Silverstone product.
Small form factor.
Possibly the smallest 1200w + on the market.

Cons: The cables.
A good power supply shouldnt have the odd cables.
Odd cables are the 6pin+6+2pin offerings.
The cables end up being too bulky.
Simple 8pin to 8pin would be much better for high end vga users like myself.
I found one issue while using the PS....if i use the 8pin my computer kept crashing when sli was enabled. Got a fix for it, see other comments.

Other Thoughts: Ive had this for 2+ years running sli but i was only using it with 4 6pin for my cards. Now i have gtx480's that requier a 6 and 8 pin. Power hungry cards. My fix for the crashing sli(gtx480x2) is to split the 8pin on the modular plugs. I was trying for hours and hours with this crashing problem when simply enough, all i had to do was separate the 8pin on the PS, I use the 8pin pci e on the left next to motherboard 8pin power and another to the far right for separation and all is well now. NO CRASHING after the separation.

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5 out of 5 eggsBest PSU

Pros: It's perfect.

Cons: The mobo power connector could be a bit longer for those of us routing behind but it fit fine enough.

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  • Katherine D.
  • 1/18/2012 11:18:45 PM
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsTerrible- DOA

Pros: Modular, but thats about all it has going for it.

Cons: It was DOA. It took 4 hours to pinpoint the problem since it was providing power to the motherboard, but apparently not enough. Plugged in my old power supply leaving it to just power the hard drives and it couldn't even get those spinning.

Other Thoughts: If it worked, it might have been a good power supply.

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

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Item#: N82E16817256041
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