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be quiet!

be quiet! Straight Power 11 Platinum 1200W, BN645, fully modular, power supply

    • Based on 813 reviews
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Size: 1200W


Pattern: Power Supply


Features

  • 80 PLUS Platinum efficiency (up to 93 9%)
  • 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 1200W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency ▪ 80 PLUS Platinum certification with an outstanding efficiency of up to 93 9% ▪ 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 ▪ Product conception design and quality control in Germany


Brand: ‎be quiet!


Item model number: ‎BN645


Item Weight: ‎8.1 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


Country of Origin: ‎China


Date First Available: ‎March 14, 2020


Frequently asked questions

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

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View our full returns policy here.

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Top Amazon Reviews

    • Can't hear anything
Size: 750W Pattern: Power Supply
This thing is stupid quiet. Just got it installed and I literally cannot when my desktop is on or off lol I had to replace an old one that came with a brand new rig purchased last year. It was making an annoying whining sound (bad capacitor?) and it was driving me nuts. So far, just had it for a day but can't speak on its reliability but damn, this thing is QUIET!! HEAVEN for my ears. ... show more
Reviewed in the United States 🇺🇸 on February 7, 2023 by Steven Ly
    • Longer than standar psu L=160mm
Size: 650W Pattern: Power Supply
Always spin at low rate, emitting a little hizz that is still audible, also note that that psu is longer than standard with L=160mm, cables are standard quality and difficult to work in matx case sama im01, overall dissapointing.
Reviewed in the United States 🇺🇸 on March 19, 2023 by Robinson Curasi Trujillano
    • No Coil Whine, Very Quiet!
Size: 850W Pattern: Power Supply
This power supply produces no audible coil whine or high pitched sound of any kind. I've had it installed for about a month and have tested it with FF14 and Control, neither of which could cause this PSU to make any noise. Even on the highest graphics settings. This is as quiet as a mouse.
Reviewed in the United States 🇺🇸 on January 14, 2023 by Juan
    • Top tier
Size: 1200W Pattern: Power Supply
I bought this when my old power supply was no longer enough to push the other parts in my computer (it was crashing due to power problems). So, I over spec'd the power supply as you should. It has been wonderful to have ever sense. I have not had any power problems since and will not need to replace it for years unless the new graphics cards take even more power than they do now. ... show more
Reviewed in the United States 🇺🇸 on December 29, 2022 by Michael
    • Mercedes Benz of Computer Power Supply
Size: 1000W Pattern: Power Supply
When you are building a premium computer the be quite! line is the best there is. While Evga has so many different levels of their PSUs, be quite! only goes good-better-best. This unit is the Platinum Version and only their Titanium versions can beat this. Simply, take any other power supply and place it on a table with a be quite! next to it and just looking at the units will tell you difference. German engineered, all the be quite! line is manufactured to the highest standards available. Do I have any complaints? Well not really a complaint, but some of their cable plugs are constructed totally different than all the other manufacturers. Not really an issue because they supply the proper cables with every power supply they sell. If your a fan of other brands and never bought one of these, try one and you'll see why they are so well liked! ... show more
Reviewed in the United States 🇺🇸 on August 20, 2022 by RFM
    • Great quality, needs better instructions
Size: 850W Pattern: Power Supply
Review Image by D. Rogers D. Rogers
I only just put it in, so I don’t have a lot of data on its operation. But as far as INTALL, the cables are so bulky & stiff that they barely fit next to the HDD enclosure (the case shares that blame too) My main concern is the instructions & labeling of the modular ports on the back… the terminology was hard to decipher since the motherboard & other components used differently abbreviations & stuff to identify what goes where. For a complete NOOB first timer I was scary since I didn’t want to fry my new PC. Absolutely buy this thing, but if you’re new to all this, DO ALL the research so you know what to do. ALSO their website has a GREAT wattage calculator to help you figure out which unit you need for the set up you have. ... show more
Reviewed in the United States 🇺🇸 on October 18, 2022 by D. Rogers D. Rogers
    • Fuente de poder
Size: 750W Pattern: Power Supply
Exelente compra, no me arrepiento por el momento no ha molestado para nada, y es muy silenciosaa
Reviewed in the United States 🇺🇸 on January 2, 2023 by Diego Roa
    • The best power supply for a test bench HANDS DOWN!
Size: 850W Pattern: Power Supply
I have owned a few different brand PSU's over the last 20 or so years and always tended to go with Seasonic for there longevity. My last one went strong for about 8 years before starting to lose 5v stability recently. So I figured I would just go Seasonic again but decided to do a little shopping around first. I had always heard good things about be quiet CPU heatsinks and fans being very reliable and super quiet but had never owned anything from them. So after watching some reviews and reading a bunch about them I decided to give one a go. I have a Praxis Wetbench (PC test bench) that has nothing to block any fan noise which is always a challenge when dealing with a test bench config. I have my system filly liquid cooled and some very quiet fans on my radiator but my Seasonic PSU was always the loudest part of my setup. To the point where when at full load benchmarking or gaming it would sound like a hair dryer and was always a bit annoying. Over the years I guess I just got used to it and debt with it. But with this be queit let me tell you.. THIS THING IS NEAR SILENT! Even when pushing it pretty hard it never gets louder them my radiator fans and they are very quiet. I cannot put into words how peaceful my office is now. Its wonderful! I cannot speak to be quiet's longevity but I can definitely say its by far, the quietest PSU I have ever used and the build quality seems very good. Also come with very pliable sleeved cables. Much better then the flat black one you get with Corsair, Thermaltake, Coolermaster and multitude of other brands. Hoping for many years of use. Love it so far! ... show more
Reviewed in the United States 🇺🇸 on October 11, 2021 by MB

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