be quiet! Straight Power 11 BN283
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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.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog be quiet! 2025 - new arrivals, bestsellers, and the most relevant models be quiet!.
Buy be quiet! Straight Power 11 BN283
be quiet! Straight Power 11 power supply unit 750 W 20+4 pin ATX ATX Black BN283 | £127.05 |  | |||
be quiet! Straight Power 11 750W Modular 80 Plus Gold Power Supply - BN283 BN283 | £129.99 |  | |||
| £135.99 |  | ||||
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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 |
be quiet! Straight Power 11 configurations
| Price for be quiet! Straight Power 11 | ||||
|---|---|---|---|---|
| be quiet! Straight Power 11 BN280 | from £98.99 | 5 offers | |
| be quiet! Straight Power 11 BN281 | from £101.99 | 4 offers | |
| be quiet! Straight Power 11 BN282 | from £118.99 | 3 offers | |
| be quiet! Straight Power 11 BN283 | from £127.05 | 3 offers | |
| be quiet! Straight Power 11 BN284 | from £138.06 | 4 offers | |
| be quiet! Straight Power 11 BN285 | from £157.10 | 4 offers | |
Can you be quieter?
By creating the Be quiet brand, the German company Listan GmbH decided to occupy an interesting niche of elite and almost silent power supplies. With a combination of premium circuitry and acoustic comfort, their products are equally in demand among gamers-enthusiasts and pros working with audio and video content. So the Straight Power 11 model became a hit for a reason, because it is one of the quietest computer power supplies with an 80+ Gold certificate and a power reserve of 750 watts. Its proprietary 14 cm Silent Wings 3 fan with hydrodynamic bearing barely emits 9 dB of noise that is indistinguishable to the ear at idle, and at peak load it starts to barely noticeably rustle (less than 21 dB).
Japanese capacitors and maximum protection
The advantages of this model also include high stability of output voltages, the presence of all types of protection and a completely changed circuitry compared to Straight Power 10. If earlier Taiwanese capacitors were used, then this time we see durable Japanese Nippon and Rubycon capacitors. An interesting feature was the division of the main 12-volt line into four sub-lines: the first feeds the motherboard and peripherals (disks, fans), the second processor, the third and fourth — video cards. On the one hand, this made it possible to achieve better voltage stabilization, on the other hand, it will not allow installing a couple of very “gluttonous” video cards into the system.
This is Love
On other fronts, Straight Power 11 also claims a medal and declarations of love: it has a fully modular structure, all cables are braided and with such a margin of length that it is enough for any case, there are four 6 + 2-pin connectors for video cards and a whole pack SATA and Molex connectors for connecting any peripherals. Well, the five-year warranty sets in a positive way. Of course, the price for this stuff will be higher than for 750-watt models from the conditional Chieftec, but it seems to us that talking about overpayment is not appropriate here. Still, this is a slightly different level, and the quality of Straight Power 11 speaks for itself.
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.