be quiet! Straight Power 11 Platinum BN308
 | Expecting restock Amazingly quiet and powerful computer power supply with modular cabling and outstanding energy efficiency. It is positioned as a product of the upper price category of 2020. Designed for use in high performance gaming systems and powerful workstations. Compliant with ATX 12V v2.51 and EPS 12V v2.92 standards, equipped with APFC module. Able to work effectively with AMD Ryzen Threadripper (TR4) and Intel Xeon (LGA3647) HEDT platforms. It is the middle model of the top be quiet! Straight Power 11 Platinum, which includes devices with power from 500, 650, 750, 850, 1000 and 1200 watts. Keeps working capacity at significant drawdowns of mains voltage (designed for the range from 100 to 240 V). It features a convenient modular cable subsystem and excellent acoustic performance of a 7-blade 120m...m Silent Wings 3 fan based on an improved fluid dynamic bearing. The cooling system remains absolutely silent with a power of up to 400 watts. be quiet! The Straight Power 11 Platinum BN308 is built on an advanced hardware platform with a resonant LLC converter, synchronous rectifier and DC-DC converters. It delivers exemplary voltage stability and impeccable 80 Plus Platinum efficiency (>94% efficiency). |
 |
Close
We recommend products in stockPSUs be quiet! →
1050 W, 24+8+8(4+4) pin, 7 x 6+2 pin, 1 x 16 pin, SATA 12, Molex 4, ATX, modular, Efficiency 92 %, semi-passive СО, mining, certificate 80+ Platinum
1000 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
750 W, 24+8+8(4+4) pin, 3 x 6+2 pin, 1 x 16 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 10 years
1000 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 13, Molex 2, ATX, modular, Efficiency 94 %, semi-passive СО, certificate 80+ Titanium, warranty 10 years
1000 W, 24+8+8(4+4) pin, 6 x 6+2 pin, 1 x 16 pin, SATA 10, Molex 2, ATX, modular, Efficiency 91 %, semi-passive СО, mining, certificate 80+ Gold
750 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 12, Molex 8, ATX, modular, Efficiency 92 %, mining, certificate 80+ Platinum, warranty 10 years
1000 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, mining, certificate 80+ Gold, warranty 5 years
850 W, 24+8+8(4+4) pin, 3 x 6+2 pin, 1 x 16 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 10 years
850 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, mining, certificate 80+ Gold, warranty 10 years
750 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 9, Molex 4, ATX, modular, Efficiency 91 %, mining, certificate 80+ Gold, warranty 10 years
750 W, 24+8+8(4+4) pin, 3 x 6+2 pin, 1 x 16 pin, SATA 8, Molex 3, ATX, modular, Efficiency 90 %, certificate 80+ Gold
850 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 12, Molex 3, ATX, modular, Efficiency 90 %, certificate 80+ Gold
850 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, backlight, mining, certificate 80+ Gold
850 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 8, Molex 4, ATX, modular, Efficiency 87 %, semi-passive СО, certificate 80+ Gold
850 W, 24+8+8(4+4) pin, 3 x 6+2 pin, 1 x 16 pin, SATA 18, Molex 3, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 10 years
be quiet! Straight Power 11 Platinum BN308 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Amazingly quiet and powerful computer power supply with modular cabling and outstanding energy efficiency. It is positioned as a product of the upper price category of 2020. Designed for use in high performance gaming systems and powerful workstations. Compliant with ATX 12V v2.51 and EPS 12V v2.92 standards, equipped with APFC module. Able to work effectively with AMD Ryzen Threadripper (TR4) and Intel Xeon (LGA3647) HEDT platforms.
It is the middle model of the top be quiet! Straight Power 11 Platinum, which includes devices with power from 500, 650, 750, 850, 1000 and 1200 watts. Keeps working capacity at significant drawdowns of mains voltage (designed for the range from 100 to 240 V). It features a convenient modular cable subsystem and excellent acoustic performance of a 7-blade 120mm Silent Wings 3 fan based on an improved fluid dynamic bearing. The cooling system remains absolutely silent with a power of up to 400 watts. be quiet! The Straight Power 11 Platinum BN308 is built on an advanced hardware platform with a resonant LLC converter, synchronous rectifier and DC-DC converters. It delivers exemplary voltage stability and impeccable 80 Plus Platinum efficiency (>94% efficiency).
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog be quiet! 2026 - new arrivals, bestsellers, and the most relevant models be quiet!.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog be quiet! 2026 - new arrivals, bestsellers, and the most relevant models be quiet!.
Series be quiet! Straight Power (high efficiency)Compare using chart →
1200 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 2 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
750 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
850 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
1000 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
750 W, 24+8+8(4+4) pin, 4 x 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
850 W, 24+8+8(4+4) pin, 4 x 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
1000 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, mining, certificate 80+ Gold, warranty 5 years
1500 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 2 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
450 W, 24+8 (4+4) pin, 2 x 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
550 W, 24+8 (4+4) pin, 2 x 6+2 pin, SATA 9, Molex 3, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
1 1 0 2 |
Excellent power supply. I haven't had a better experience yet. We're talking about 750W, Platinum Complete silence. from 10 cm. You can’t hear him at all!!! Under load up to 500 W the same. The fan runs 200-300 rpm. The most important thing for me is that there is no throttle squeak/buzz/buzz. Complete silence. In the old passive SeaSonic at 400W, it was just a high-frequency squeak that was produced. Not found  Aleksey Kalita: use be quiet! BN307 few months |
Broke down after 2 months of use (purchased for subsequent computer upgrade in March 2020). PC configuration: i5 9600k + RTX 2070S. The computer shut off and something smelled burnt, turned out to be the power supply, the computer was in desktop mode, and there were no storms or power surges, the second home PC was working fine at that moment. Returned it under warranty and got a refund, bought a slightly cheaper EVGA SuperNOVA 650 PSU. PS Will never buy BeQuiet again, at work two 500W "system power 9" units failed even in office PC configurations. Quiet and seemed reliable Broke after 2 months |
Burned on the first day of use during the game Metro Exodus 05/17/2020 Looks high-quality but did not meet expectations Burned quickly Anton: |
3 out of 4 user review(s) shown
1 more user review(s)
Video reviews
Straight Power 11 Platinum VS Gold (english) | be quiet!
28 January 202068 695 view
Straight Power 11 Platinum | be quiet | multi-language
21 January 20207 957 view
Best Quiet Power Supply | be quiet! Straight Power 11 Platinum 1200W Unboxing
12 July 20231 076 view