be quiet! Straight Power 11 BN283
 | Outdated Product An exclusive Hi-End class power supply with a rated power of 750 W, which, by the way, is not the limit for this device — the OverLOAD option allows you to increase the peak load, without output voltage drop, up to 875 W! The PSU is certified according to the 80 PLUS GOLD standard, so this model can be trusted to power powerful and expensive components. The efficiency reaches 93%. The model received 4 independent power lines (12 V), which makes it as reliable as possible. The Be quiet Straight Power 11 Straight Power 11 750W power supply utilizes a fully modular wire connection, allowing you to make the most of modern cable management solutions for advanced system units. One of the main features is the use of boards with a wireless connection of components — the absence of unnecessary wiri...ng has a positive effect on cooling. The circuitry is built using Japanese-made capacitors, which are distinguished by excellent stability and reliability even when operating at a temperature of +105 ˚С. Active cooling is provided by a 135mm fan that is supported by a high quality fluid dynamic bearing. The operation of the fan will not disturb the silence and harmony. |
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Certificate 80+ Gold. Element base with Japanese capacitors. Modular structure. Length of cables with a margin. Separate power stabilization system.
An exclusive Hi-End class power supply with a rated power of 750 W, which, by the way, is not the limit for this device — the OverLOAD option allows you to increase the peak load, without output voltage drop, up to 875 W! The PSU is certified according to the 80 PLUS GOLD standard, so this model can be trusted to power powerful and expensive components. The efficiency reaches 93%.
The model received 4 independent power lines (12 V), which makes it as reliable as possible. The Be quiet Straight Power 11 Straight Power 11 750W power supply utilizes a fully modular wire connection, allowing you to make the most of modern cable management solutions for advanced system units. One of the main features is the use of boards with a wireless connection of components — the absence of unnecessary wiring has a positive effect on cooling. The circuitry is built using Japanese-made capacitors, which are distinguished by excellent stability and reliability even when operating at a temperature of +105 ˚С. Active cooling is provided by a 135mm fan that is supported by a high quality fluid dynamic bearing. The operation of the fan will not disturb the silence and harmony.
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 →
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
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
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Model overview based on user reviews
The "be quiet! Straight Power 11" power supply unit is highly praised for its exceptional silence and quality build. Users appreciate its fully modular design and long cables, allowing for flexible and tidy installations. Despite some minor issues like stiff wires and unclear instructions, the PSU is considered reliable, with stable voltage lines under load. However, there are isolated reports of defective units and unexpected shutdowns, though these were swiftly addressed by the service center with replacements. Overall, the PSU is valued for its quiet operation and durability, making it a recommended choice for those seeking a high-quality power supply.
Pros
Cons
0 0 3 2 |
Quality, modularity+-, it weighs normally :)), Completeness+-, length and number of cables. Power around 700 watts. I was ready to pay this money for it, the most important part in a PC. The instructions are not clear. All the sockets are marked in their own way, but there is no clear information on them in the instructions, I had to google ... in fact, nothing complicated. Why the metal braid is unclear, tight.  K10: use be quiet! BN283 less than month |
Bought this power supply hoping for quiet operation. Upon connection, a squeal appeared. Got a defective unit, was very surprised and upset by this. The next day, took it back to the store. - Truly quiet operation - Modular - Long cables - Stiff wires - Loud sound of the switch when turning the computer on or off. Viktor: use be quiet! BN282 less than month |
I bought a Gigabyte G750H to replace it for my assembly and went nuts from the level of silence that this power supply shows. Well done Germans, they did everything very high quality inside and out. Long connection wires allowed me to lay cables in a way that the previous PSU did not work out. Long-awaited silence, long cables, fully modular -  Alex Chugaev: use be quiet! BN283 less than month |
3 out of 5 user review(s) shown
2 more user review(s)
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850 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 8, Molex 4, ATX, modular, Efficiency 90 %, mining, certificate 80+ Gold, warranty 10 years
750 W, 24+8+8(4+4) pin, 4 x 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 92 %, semi-passive СО, certificate 80+ Platinum, warranty 10 years
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
750 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 6, Molex 2, ATX, modular, Efficiency 90 %, semi-passive СО, 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
750 W, 24+8+8(4+4) pin, 3 x 6+2 pin, 1 x 16 pin, SATA 9, Molex 3, ATX, modular, Efficiency 91 %, semi-passive СО, certificate 80+ Gold
850 W, 24+8+8(4+4) pin, 2 x 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 91 %, certificate 80+ Gold
750 W, 24+8+8(4+4) pin, 4 x 6+2 pin, 1 x 16 pin, SATA 8, Molex 3, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 5 years
850 W, 24+8+8(4+4) pin, 2 x 6+2 pin, SATA 10, Molex 8, ATX, modular, Efficiency 92 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
650 W, 24+8+8(4+4) pin, 3 x 6+2 pin, SATA 6, Molex 4, ATX, modular, Efficiency 92 %, certificate 80+ Gold, warranty 7 years
750 W, 24+8+8(4+4) pin, 4 x 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 5 years
750 W, 24+8+8(4+4) pin, 6 x 6+2 pin, SATA 9, Molex 4, ATX, modular, Efficiency 87 %, semi-passive СО, backlight, mining, certificate 80+ Gold
Everything is fine, it came new in sealed packaging via NP.
Quiet, the relay click is inaudible in the room (it is very quiet on its own). Haven't given it a proper load yet, don't have the means, it's in a PC with a load up to 350 watts. The 12V, 5V, and 3V lines do not sag, the values are stable with a margin.
I'll add a comment later after installing in a new computer.