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be quiet! BN515 Straight Power 12-850w 80 Plus Platinum, ATX 3.0, Modular Power Supply, for PCIe 5.0 GPUs and GPUs with 6+2 pin connectors, Silent 135mm be quiet! Fan - BN515

  • Based on 1,037 reviews
Condition: New
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$229.90 Why this price?
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Availability: Only 7 left in stock, order soon!
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Arrives Aug 4 – Aug 10
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Style: 850W Platinum ATX3.0


Features

  • 80 PLUS Platinum efficiency (up to 93.8%)
  • ATX 3.0 PSU with full support for PCIe 5.0 GPUs and GPUs with 6+2 pin connectors
  • Handles massive power excursions
  • Virtually inaudible Silent Wings 135mm fan
  • Funnel-shaped fan opening on PSU case for high airflow intake

Description

80 PLUS Platinum efficiency (up to 93,9%) , ATX 3.0 PSU with full support for PCIe 5.0 GPUs and GPUs with 6+2 pin connectors , Handles massive power excursions , Virtually inaudible Silent Wings 135mm fan , Funnel-shaped fan opening on PSU case for high airflow intake, Full bridge LLC technology for unmatched signal stability , One massive high-performance 12V-rail , Japanese 105°C capacitors ensure highest stability and reliability , Modular cable management for maximum convenience , 10-year manufacturer’s warranty

Model Name: BN515


Brand: be quiet!


Compatible Devices: Computer Systems


Connector Type: ATX, PCI Express


Output Wattage: 12 Watts


Form Factor: ATX 3.0


Wattage: 850 watts


Cooling Method: active fan-based


Item dimensions L x W x H: 6.3 x 5.91 x 3.39 inches


Power Supply Design: Internal


Brand: ‎be quiet!


Series: ‎BN515


Item model number: ‎BN515


Item Weight: ‎7.77 pounds


Product Dimensions: ‎6.3 x 5.91 x 3.39 inches


Item Dimensions LxWxH: ‎6.3 x 5.91 x 3.39 inches


Manufacturer: ‎be quiet!


Date First Available: ‎July 21, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 4 – Aug 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • wonderful
Style: 1200W Platinum ATX3.0
The be quiet! BN517 Straight Power 12 is an exceptional PSU for high-performance systems. With a 1200W output and 80 Plus Platinum efficiency, it easily powers my gaming rig and ensures minimal energy wastage. The modular design is a huge bonus, making cable management clean and hassle-free. What stands out the most is how quiet it is, even under heavy loads. True to its name, the PSU runs almost silently, which is perfect for anyone who values a quiet workspace or gaming environment. The ATX 3.0 support also ensures compatibility with the latest components, making it future-proof for upcoming builds. Build quality is top-notch, and the inclusion of premium cables adds to the overall value. I couldn’t be happier with this purchase—it's a solid investment for enthusiasts or professionals looking for reliability and performance. ... show more
Reviewed in the United States on November 26, 2024 by z

  • No issues so far...and it IS quiet!
Style: 850W Platinum ATX3.0
So far, so good. I haven't built a system since 2015 and things have come a long way since then. The modular cabling for me is a revelation, since it helps reduce the clutter of cable runs I don't need. Mounting was a little off but that was due to the case, not the power supply. I have no real way of testing it but, with the i9-13900KF processor, a Radeon graphics card, and (for now) m2 SSD, the 850 watts far exceeds my power needs, and it is working reliably and running cool. And as it says on the tin...it's quiet! ... show more
Reviewed in the United States on January 20, 2025 by -=Rudy=-

  • Excellent High Quality Power Supply
Style: 1500W Platinum ATX3.0
I needed this item when my NZXT PSU failed after only 10 months of regular use. I was in the middle of very important work related projects and needed a replacement right away. Amazon same day delivery and the availability of this high end product saved the day. This PSU is a highly rated and fairly priced item that lives up to its name, Be Quiet!, by operating in absolute silence while delivering lots of power. The included cables are also high quality with sleeves and plenty of them. ... show more
Reviewed in the United States on December 25, 2024 by Bobby D.

  • Great power supply, very quiet.
Style: 850W Platinum ATX3.0
This power supply has performed great and it is very quiet under load even for extended periods of time, It handles power spikes from high wattage components very well.
Reviewed in the United States on February 26, 2025 by Jake

  • Quiet
Style: 1500W Platinum ATX3.0
Great quality. Nice and quiet.
Reviewed in the United States on March 17, 2025 by Tom Marshall

  • Another great Be Quiet product
Style: 1200W Platinum ATX3.0
Definitely gotten the job done. As a Corsair fan, I typically try to stick with them for various PC parts, however, after identifying that my Corsair PSU was not getting the job done and causing my pc to crash, I ended up switching to this beauty. For a 1200w PSU, its actually super quiet, haven't had any PC crashes, the mesh sleeves feel amazing, I think the only downside I can say is that the power cables for the CPU are slightly too short, so they became a pain for cable organization, also came super close to not even reaching the plugs on the motherboard (normal ATX case with motherboard CPU power in the top left corner) ... show more
Reviewed in the United States on October 23, 2024 by Sean

  • Dead Silent and Extremely Efficient!
Style: 850W Platinum ATX3.0
Construction is impeccable. Fan is dead Silent even under load. It's very efficient and an excellent value. I'd buy this brand again! Installation was easy!
Reviewed in the United States on January 5, 2025 by J&L Prime Picks

  • Worked well for a year!
Style: 1000W Platinum
I didn't write a review when I first purchased this power supply nor when this power supply failed but I decided it was time to do so now. I purchased this power supply around Sep 2021 as part of several other items needed to rebuild my desktop. It installed fairly easily and it did come with plenty of connector cables. While it was in use the loudest parts of my computer were the cooling fans (still are). When it failed almost 11 months later. Unfortunately, I couldn't wait for the whole return/test/fail/replace scenario to play out and purchased another beQuiet power supply a day later (I had to get the 11 Platinum 1200w since it was the only one available for next day delivery). I finally got around to mailing off the broken supply in April 2023. I was notified April 21 that the facility had received my item. It is now May 2nd, 2023 and my replacement power supply was delivered today. I am pleased with the fairly quick turn around .. I just wish it was more like a broken cell phone .. they ship you the replacement FIRST and if you fail to send the broken item back they charge you for it. If I can find someone who wants to buy a new Straight Power 11 Platinum 1000W power supply I can offset some of my costs, since I don't expect the one in my computer to die (in over 20 years of building my computers I have only had 2 power supplies fail on me .. I have replaced many for bigger/better/newer reasons). ... show more
Reviewed in the United States on May 2, 2023 by Brent2u

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