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Kingwin Inc. > 
Item#: N82E16817121083

KINGWIN STR-500 500W ATX 12V v2.2, EPS 12V v2.91 and SSI EPS 12V v2.92 SLI 80 PLUS PLATINUM Certified Modular Active PFC Stryker Fanless Power Supply


  • ATX 12V v2.2, EPS 12V v2.91 and SSI EPS 12V v2.92
  • Modular
  • 80 PLUS PLATINUM Certified
  • 100 - 250 V 50/60 Hz
  • +3.3V@20A, +5V@20A, +12V@41.5A, -12V@0.5A, +5VSB@2.5A
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Kingwin Stryker STR-500 is here, the first ever 0dBA fan-less modular power supply with 80 Plus Platinum certification. Stryker is rated 92.83% efficiency at 50% load, completely meets the U.S.A. Energy Star Standard, and is the first of its kind in the world being offered to PC consumers. This unit features a fan-less design, which lets users operate their PC under a complete zero-noise environment. Kingwin has delivered a breakthrough solution to offer a perfect balance between power, efficiency, and noise.

Not only has Stryker STR-500 achieved 80Plus Platinum certification, it also uses the single 12V rail design which provides enough power to your high end components, including your high end CPU and the latest multi GPUs configuration. Stryker STR-500 also uses Japanese capacitor to ensure the highest quality for the power supply, solid performance for customers, and to satisfy today’s high end PC power demand.

  • newegg 80 PLUS Platinum Certified The 80 PLUS Platinum certified power supply provides ultra-high power efficiency of 92% at 50% load, 90% Efficiency at 20% load, 89% Efficiency at 100% load, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg Fanless Design for 0dBA Operation The Kingwin Stryker STR-500 was designed from the ground up with thermal solution tailored specifically for fanless application, thanks to 80Plus Platinum efficiency, a large, passively cooled heatsink on the top surface and high quality components capable of operating in higher environmental temperature with longer lifetime.
  • newegg Overclockable Power with Single Strong +12v Rail Compliant with ATX 12V v2.2, EPS 12V v2.91, and SSI EPS 12V v2.92 Specification, the Kingwin LZP-550 is capable of delivering 500W of 80 PLUS Platinum certified continuous output. It can even be overclocked to 600W continuous at 80Plus Gold rating. A single high current +12V rail @ 41.5A design ensures the best compatibility and maximum provision of 12V power to multi-core CPUs and energy-hungry graphics cards.
  • newegg Easy Plug-in Modular Cable Design The cube modular connector cable design allows use of only the cables you need and easier cable routing inside the case, resulting in improved airflow and reduced system clutter.
  • newegg SLI/CROSSFIREX Support 2x 6 Pin and 2x 6+2 Pin PCI-E connectors are included to support SLI/CrossFireX.
  • newegg Japanese Capacitor High-quality Japanese capacitors provide uncompromising performance, lifespan and reliability.

Learn more about the Kingwin Inc. STR-500




ATX 12V v2.2, EPS 12V v2.91 and SSI EPS 12V v2.92
Maximum Power
Main Connector
+12V Rails
PCI-Express Connector
2 x 6-Pin, 2 x 6+2-Pin
SATA Power Connector
SLI Ready
Haswell Support
up to 89%
80 PLUS PLATINUM Certified
Over Voltage Protection
Input Voltage
100 - 250 V
Input Frequency Range
50/60 Hz
Input Current
+3.3V@20A, +5V@20A, +12V@41.5A, -12V@0.5A, +5VSB@2.5A
cTÜVus / TÜV / CB / CE / FCC / C-Tick / BSMI / RoHS / CCC
6.75" x 5.88" x 3.38"
6.61 lbs


1 x Main connector (20+4 pin)
1 x 8-pin + 12V Power Connector
5 x 4-pin Peripheral Power Connector
6 x SATA
1 x Floppy
4 x PCI-E
Fanless 0 dBA Operation

Fit with U.S.A. Energy Star standards

EuP(Energy-using Products) instructions: energy consumption during shut off status less than 1W.

Support all intel and AMD Multi-Core CPU and its compatible Motherboards, ATX/BTX compliant.

Compliance with ATX 12V v2.2, EPS 12V v2.91 and SSI EPS 12V v2.92 Specification.

Passed 80 PLUS Platinum Certification, on 20% 50% 100% loading, with 90% 92% 89% Efficiency.

Over Power Protection/Under Power Protection/Over Voltage Protection/ Short Circuit Protection.

Support nVIDIA (SLI)/ATI, high rank & high efficiency graphic card.

All series are made of RoHS unleaded green material.

More than 2,000 times ON/OFF Test.

Unique easy plug-in design, safe and firmly attached once connected.

Multiple safety certificates acquired.

Unique Pending (U.S.A, Germany, Japan unique applied).

High Power and Low Consumption Transformer.

Quick Info


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

Customer Reviews of the Kingwin Inc. STR-500

Do you own this product? Write a Review

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  • fliz
  • 7/25/2014 1:58:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsDied in less than 1 year

Pros: worked like a charm while it worked

Cons: stopped working

Other Thoughts: supposedly has a 5 year warranty. lets see how dealing with kingwin turns out.

Did you find this review helpful? Yes No

  • N/A
  • 1/16/2014 4:34:48 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsDied after a year

Pros: Really quiet (due to being fanless), no coil whine, ran very cool

Cons: Died after a year. I am now in the process of RMA

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

  • Buddy
  • 10/22/2013 7:15:06 PM
  • Tech Level: High
  • Ownership: less than 1 day

5 out of 5 eggsSame as Rosewill SilentNight-500 ?

Pros: I do not own this Kingwin Stryker STR-500, BUT, just for the info, it appears to be the same as Rosewill SilentNight-500.

I own two of the Rosewill SilentNight-500 and I like them.

Cons: None.

Other Thoughts: When using a fanless PSU, always make sure all of the radiated heat from the PSU gets directly out of the computer case. The lowest cost way of doing this is to always make sure the case fan(s) blow air from outside the computer case direcrly into the case. Never, have fans "sucking" air out of the case, because, this will pull outside air into the fanless PSU and dump the heat inside ther case.

I do my fanless PSU setups a little different. I always locate the PSU in a separate chamber inside the computer case. I install a super-quiet, low-volume air flow fan to blow the heat out the back. This arrangement cost more, but, it results in the quietest setup, plus, I know 100% for sure all the heat radiated from the PSU gets directly out of the case. Some may say, why buy a fanless PSU if you are going to use a fan to blow the heat outside? Answer: None of the PSUs with fans are as quiet as the fan I use, plus, fanless PSUs are better designed to conduct & radiate heat away from the internal components.

Cost is not a factor with my designs, it is 100% about getting all of the heat directly out of the case with the lowest sound level.

4 out of 5 people found this review helpful. Did you? Yes No

  • Wakkorotti
  • 8/3/2013 7:46:49 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsWish I Bought A Seasonic Instead

Pros: Silent

Cons: Large (barely fit in my case's PSU slot), cables seem cheap, total cable configurations (different connector combinations) is lacking, unit died after less than 2 months

Other Thoughts: RMA process slow (unit was in back order for a while)

Did you find this review helpful? Yes No

  • Luke2k
  • 4/9/2013 12:59:56 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsTotal silence

Pros: - Silent PSU. My case fans is now the loudest component of my PC.
- It has connectors for two videocards.
- Modular connectors.
- It doesn't get hot even after many hours of usage. Though I will test it when I have time to play graphics intense games.
- Probably one of the best totally silent PSU out there.
- This is 80 plus certified PSU.

Cons: - Kind of heacy due to large heatsink.
- Price is still high, but you get what you paid for.
- For that price, maybe it should come with different color LED which you can switch on or off, like Corsair Gxxx series.

Other Thoughts: This PSU being totally silent with no fan at all, chances are it may need air flow coming from the PC case itself. For example, in my HAF922 I have the PSU at the bottom with 200mm intake fan cooling the hard disks and some air will also flow towards the PSU.
Then I have GTX285 videocard with updated fans pointing at the PSU below.
And last there is another 200mm fan on top of case for blowing out the hot air. Although even with heavy usage my system doesn't get very hot, just warm.

Did you find this review helpful? Yes No

  • richie9livesgrant
  • 3/16/2013 9:56:44 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsKingwin 500 watt fanless works great!

Pros: It's running two MSI R7870 Hawk CrossfireX video cards very well. Stealthily silent and runs fairly cool, even while running BOINC at 100% stress. So far, I'm very pleased with this PSU. It provides sufficient power for the AMD FX-6300 Six-Core CPU (and two CrossfireX cards). Also running 16 Gigs of RAM.

Cons: None.

Other Thoughts: It's an excellent addition to my fanless computer!

Did you find this review helpful? Yes No

  • N/A
  • 1/23/2013 7:45:27 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks like a charm

Pros: What's to say? It keeps my PC cool and has no fan. I like it. Been running for almost a year and still ticking.

Cons: None so far.

Did you find this review helpful? Yes No

  • David
  • 1/14/2013 9:57:14 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

2 out of 5 eggsDied After 9 Months

Pros: It's silent, modular, and super efficient.

Cons: Mine died after about 9 months. I started noticing "random" reboots while my computer wasn't even in use with nothing in the Event Logs to indicate software/driver issues. The reboots became more frequent and while stress testing to try and pinpoint the problem, the power supply tripped my motherboard's surge protection feature.

Other Thoughts: I don't assume that my case is typical, but it's really annoying when a piece of hardware dies like this. I'm going to have to take my entire computer apart and redo all the cabling due to this failure.

I am RMA'ing the power supply with Kingwin (5 year warranties are nice!), but I will probably just sell the replacement and use a new PSU I just ordered.

2 out of 3 people found this review helpful. Did you? Yes No

  • ScruffyFace
  • 1/5/2013 1:20:48 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month

5 out of 5 eggsForget the rest and buy THE BEST

Pros: Totally silent, designed beautiful, nice box and package, it's silent, runs cool as a cucumber, no fan to suck in dust. Nice silicone covers are used to cover the unused modular ports.

Cons: Not totally modular as the PCI-E cable is hard wired. Guess they figured most people use it so there's no reason to make it a separate cable.

Other Thoughts: They include thumb screws to mount the power supply to the case. Seemed a bit silly to use them, standard case screws are fine, it's not like I'm going to remove the thing on a regular basis.

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

  • thegoldenfist
  • 11/30/2012 3:01:33 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsFavorite PS EVAR

Pros: Is it even necessary to say that this PS doesn’t make a sound? It has no fans so don’t worry about it. I’ve got this unit in my bedroom computer for a reason. The power supply doesn’t even break a sweat in delivering power and it stays cool. I’m only using one of the (modular) power connectors so the other 3 are not taking up space in my build.

Cons: None

Did you find this review helpful? Yes No

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Item#: N82E16817121083
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