be quiet! Straight Power 11 Platinum 1200W Quiet Performance Power Supply | Fully Modular | BN645
Condition: Used - Very Good
Notify me when this product is back in stock
$298.90
Holiday Deal
· 57% off
was $699.00
Buy Now, Pay Later
As low as
$49.82
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Unavailable
At a glance
- Condition
- Used - Very Good
- Style
- 1200W Platinum
- Model
- BN645
- Dimensions
- 13 x 9.75 x 4 in
- Weight
- 8.1 lb
- Color
- Black
- Connector Type
- PCI Express
- Works with
- Personal Computer
Features 5
- 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
Specs 16
| Model Name | straight power 11 |
|---|---|
| Brand | be quiet! |
| Connector Type | PCI Express |
| Output Wattage | 1200 Watts |
| Form Factor | ATX |
| Wattage | 1200 watts |
| Cooling Method | Air |
| Item dimensions L x W x H | 13 x 9.75 x 4 inches |
| Power Supply Design | Full Modular |
| Series | straight power 11 |
| 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! |
No specs match.
Frequently asked questions
This product is currently out of stock. Please check back later for shipping info.
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Solid PSU
Style: 1000W Platinum ATX3.0
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
Quiet and stable
Style: 1200W Platinum ATX3.0
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
Quiet, as advertised
Style: 750W Platinum ATX3.0
Fantastic upgrade for my rebuild. More than enough power to run my system, multiple drives, and big graphics card. High quality is evident.
Reviewed in the United States on June 12, 2024 by Amazon Customer
The best power supply for a test bench HANDS DOWN!
Style: 850W Platinum
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
Great PSU
Style: 750W Platinum ATX3.0
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
Finally found it - a quiet power supply!
Style: 1200W Platinum ATX3.0
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
Second One Worked
Style: 1000W Platinum ATX3.0
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
Perfect.
Style: 1200W Platinum ATX3.0
The power supply is so quiet and it runs so good on games. i recommend 100% to anyone builiding a pc or looking to replace their power supply to go with this one.
Reviewed in the United States on September 7, 2024 by Cobe