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be quiet!

be quiet! Straight Power 11 Platinum 1000W Quiet Performance Power Supply | Fully Modular | BN644

    • Based on 933 reviews
Condition: Used - Very Good
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Style: 1000W Platinum


Features

  • 80 PLUS Platinum efficiency (up to 94.1%)
  • Virtually inaudible Silent Wings 3 135mm fan
  • Funnel-shaped fan opening of the PSU case for high airflow intake
  • Wire-free inside the PSU on the DC side for enhanced cooling and longevity
  • Modular cables for maximum build flexibility

Description

be quiet! Straight Power 11 Platinum 1000W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency. 80 PLUS Platinum certification with an outstanding efficiency of up to 94.1% Virtually inaudible operation thanks to a Silent Wings 3 135mm fan Big funnel-shaped fan opening of the PSU case for high airflow intake Wire-free on the DC side inside the PSU for enhanced cooling and longevity Modular cables for maximum build flexibility Advanced stability and voltage regulation thanks to LLC, SR and DC-to-DC Four high-performance 12V rails Powerful multi-GPU support with six PCI-Express connectors Japanese 105°C-rated capacitors ensure stability and reliability Power signal stability unmatched in its class ErP and Energy Star 7.0 ready 5-year manufacturer’s warranty Product conception, design and quality control in Germany

Model Name: straight power 11


Brand: be quiet!


Compatible Devices: Personal Computer


Connector Type: PCI Express


Output Wattage: 1000 Watts


Wattage: 1000 watts


Cooling Method: Air


Item dimensions L x W x H: 13 x 9.75 x 4 inches


Power Supply Design: Full Modular


Fan Count: 1


Brand: ‎be quiet!


Series: ‎straight power 11


Item model number: ‎BN644


Item Weight: ‎8.18 pounds


Product Dimensions: ‎13 x 9.75 x 4 inches


Item Dimensions LxWxH: ‎13 x 9.75 x 4 inches


Color: ‎Black


Manufacturer: ‎be quiet!


Date First Available: ‎March 14, 2020


Frequently asked questions

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Upgraded my PC and decided to go with this PSU and I am very happy. I have not heard this PSU at all and I worried its not working lol. Its so quiet, no rgb, just providing solid raw power to my 14700k & RTX 3090. It came with all the cables needed and extra. Truly happy with this PSU and great brand to stand behind. ... show more
Reviewed in the United States on August 8, 2024 by YimYorn
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I've had this power supply for about 2 weeks now and so far so good, its stable and quiet. The atx 3.0 cable really tidies up the installation with only one cable going to the gpu. I've ran many games with no issues. I cant hear the power supply at all and the price is great. Would recommend as this is my first be quiet! product I've purchased. ... show more
Reviewed in the United States on February 7, 2024 by Paul M
    • Finally found it - a quiet power supply!
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Review Image by Daru Junie Daru Junie
I was always bothered by the background noise from my power supply, especially at night. Discovered the be quiet! product and decided to give it a try. True to its name, it's incredibly quiet and provides stable power. The price is reasonable too. I won't have to worry about power issues when upgrading my computer in the future. ... show more
Reviewed in the United States on April 12, 2024 by Daru Junie Daru Junie
    • Great PSU
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Great power supply. Got it when it was on sale for my NAS. Works great, energy efficient and reliable. Would buy again.
Reviewed in the United States on June 18, 2024 by Tim
    • Solid power unit
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Extremely silent, robust build , love it
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If I based this review entirely on the second one I received then I would say for sure 5 stars. The thing works like a champ. Imperceptible noise level. Good performance. My ONLY qualm is this is the second one as the first one received had coil whine and a weird zap sound when I turned it on similar to an arcing noise. Quality control on these MAY not be the best. But if you get a good one then youre in for a fantastic psu. I think this is common for even the seasoned Seasonic brand so I wouldnt write off Be Quiet if you have an initially bad experience. ... show more
Reviewed in the United States on February 29, 2024 by Kelsey
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Received today from Amazon and installed even though it wasn’t necessary as my seasonic 850W gold is still chugging along with my 4090. Really upgraded for the future of what’s next, the 1200 watts and ATX 3.0. All went as planned to this point, pulled out the old and installed the new while cleaning out the dust in the computer. Cables are nicer than the seasonic I had, all with mesh strains. Plenty of cables left for doing more if I want too. Plugged in the new hefty ATX 3.0 plug and everything fired back up without a hitch, put all my glass panels on the nicely cleaned up case and gamed away, will update if anything changes in the short term. Also, an added side note, mine was not made in China, it was made in Taiwan. ... show more
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