£168.12 Original price was: £168.12.£159.85Current price is: £159.85.
£168.12 Original price was: £168.12.£159.85Current price is: £159.85.
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Product Description
Be Quiet! Straight Power 12 850W Platinum Efficiency Silent Mastery
Ultimate Power Efficiency for Demanding Builds
The Be Quiet! Straight Power 12 850W sets a new benchmark in power delivery with its 80 PLUS Platinum certification and support for ATX 3.0 standards. With efficiency peaking at an impressive 94%, it ensures minimal power loss and reduced heat output. This not only lowers electricity costs but also contributes to quieter, cooler operation—ideal for premium gaming setups and professional workstations that demand both performance and precision.
Prepared for the Future of PC Hardware
Built to fully comply with ATX 3.0 and PCIe 5.0 specifications, this PSU offers maximum versatility and forward compatibility. It comes equipped with both the high-capacity 12VHPWR connector for next-gen GPUs and multiple PCIe 6+2-pin connectors for current high-performance cards. Backed by a powerful single 12V rail, it confidently handles power excursions up to twice its rated wattage—perfect for modern CPUs and GPUs with sudden power spikes.
Whisper-Quiet Cooling with Premium Components
Featuring a virtually silent 135mm Silent Wings fan with fluid-dynamic bearing and a 6-pole motor, the Straight Power 12 delivers optimal cooling with minimal noise. The funnel-shaped air intake enhances airflow efficiency, and the wire-free internal design reduces resistance while improving cooling. High-quality Japanese 105°C capacitors further ensure long-term reliability, making this PSU a cornerstone for any high-end, quiet, and future-proof PC build.
| Description | Specification |
|---|---|
| Form Factor | ATX |
| Series | Be Quiet! Straight Power 12 |
| Wattage | 850 W |
| Modular | Fully Modular |
| Compatibility | ATX 3.0 EPS 12V v2.92 PCIe 5.0 |
| Wattage Range | 800 – 860W |
| Connectors | 1 x P4+4 (CPU) 1 x P8 (CPU) 1 x 12VHPWR cables 1 x PCI-e 6+2-pin (GPU) 9 x SATA 2 x PATA |
| Rail Design | One massive high-performance 12V-rail |
| AC Input | AC 100-240 V |
| Fan Type | 135mm Silent Wings Fan |
| Fan Bearing | Fluid / Hydraulic Bearing |
| Noise | dB(A) at 10% load: 7.5 dB(A) at 20% load: 7.5 dB(A) at 50% load: 7.7 dB(A) at 100% load: 22.1 |
| Max Certification | Platinum |
| Efficiency | 80+ Platinum 230V, 2% load: 61.0% 230V, 10% load: 89.2% 230V, 20% load: 93.1% 230V, 50% load: 94.0% 230V, 100% load: 92.3% |
| MTBF | >100,000 hours |
| Protection | OTP (Over Temperature Protection) OCP (Over Current Protection) OPP (Over Power Protection) SCP (Short Circuit Protection) OVP (Over Voltage Protection) UVP (Under Voltage Protection) SIP (Surge & Inrush Protection) |
| Package Contents | PSU Screws Cable ties User manual |
| Weight / Dimensions | 1.81 kg (LxWxH) 160 x 150 x 86 mm |
| Package Weight | 3.9000 kg |
| Warranty | 10 Years |
| ATX 3.1 / 3.0 | ATX 3.0 |
Other Options
Customer Reviews
46 reviews for Be Quiet! 850W Straight Power 12 PSU Fully Modular 80+ Platinum ATX 3.0
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- 24-pin ATX 3.0
- 850W Wattage
- Fully-Modular
- 80 PLUS Platinum
Be Quiet! Straight Power 12 850W Platinum Efficiency Silent Mastery
Ultimate Power Efficiency for Demanding Builds
The Be Quiet! Straight Power 12 850W sets a new benchmark in power delivery with its 80 PLUS Platinum certification and support for ATX 3.0 standards. With efficiency peaking at an impressive 94%, it ensures minimal power loss and reduced heat output. This not only lowers electricity costs but also contributes to quieter, cooler operation—ideal for premium gaming setups and professional workstations that demand both performance and precision.
Prepared for the Future of PC Hardware
Built to fully comply with ATX 3.0 and PCIe 5.0 specifications, this PSU offers maximum versatility and forward compatibility. It comes equipped with both the high-capacity 12VHPWR connector for next-gen GPUs and multiple PCIe 6+2-pin connectors for current high-performance cards. Backed by a powerful single 12V rail, it confidently handles power excursions up to twice its rated wattage—perfect for modern CPUs and GPUs with sudden power spikes.
Whisper-Quiet Cooling with Premium Components
Featuring a virtually silent 135mm Silent Wings fan with fluid-dynamic bearing and a 6-pole motor, the Straight Power 12 delivers optimal cooling with minimal noise. The funnel-shaped air intake enhances airflow efficiency, and the wire-free internal design reduces resistance while improving cooling. High-quality Japanese 105°C capacitors further ensure long-term reliability, making this PSU a cornerstone for any high-end, quiet, and future-proof PC build.
| Description | Specification |
|---|---|
| Form Factor | ATX |
| Series | Be Quiet! Straight Power 12 |
| Wattage | 850 W |
| Modular | Fully Modular |
| Compatibility | ATX 3.0 EPS 12V v2.92 PCIe 5.0 |
| Wattage Range | 800 – 860W |
| Connectors | 1 x P4+4 (CPU) 1 x P8 (CPU) 1 x 12VHPWR cables 1 x PCI-e 6+2-pin (GPU) 9 x SATA 2 x PATA |
| Rail Design | One massive high-performance 12V-rail |
| AC Input | AC 100-240 V |
| Fan Type | 135mm Silent Wings Fan |
| Fan Bearing | Fluid / Hydraulic Bearing |
| Noise | dB(A) at 10% load: 7.5 dB(A) at 20% load: 7.5 dB(A) at 50% load: 7.7 dB(A) at 100% load: 22.1 |
| Max Certification | Platinum |
| Efficiency | 80+ Platinum 230V, 2% load: 61.0% 230V, 10% load: 89.2% 230V, 20% load: 93.1% 230V, 50% load: 94.0% 230V, 100% load: 92.3% |
| MTBF | >100,000 hours |
| Protection | OTP (Over Temperature Protection) OCP (Over Current Protection) OPP (Over Power Protection) SCP (Short Circuit Protection) OVP (Over Voltage Protection) UVP (Under Voltage Protection) SIP (Surge & Inrush Protection) |
| Package Contents | PSU Screws Cable ties User manual |
| Weight / Dimensions | 1.81 kg (LxWxH) 160 x 150 x 86 mm |
| Package Weight | 3.9000 kg |
| Warranty | 10 Years |
| ATX 3.1 / 3.0 | ATX 3.0 |

Lindsay (verified owner) –
Decent component but came in basic packaging
Leilani (verified owner) –
Installation was tricky for beginners
Nya (verified owner) –
Gets the job done, nothing more
Odie (verified owner) –
Everything works fine, but delivery could be faster
Patsy (verified owner) –
Exactly what I needed for my gaming rig
Ramon (verified owner) –
Very efficient and stays cool
Neoma (verified owner) –
Expected more from this brand
Lincoln (verified owner) –
Stable and reliable so far, time will tell
Lauren (verified owner) –
Not perfect but definitely worth the price
Nigel (verified owner) –
Fair price and great service
Mike (verified owner) –
Massive improvement from my old component
Mayra (verified owner) –
Really impressed with the durability
Markus (verified owner) –
Came with everything needed to get started
Randal (verified owner) –
Amazing value for money, my PC runs smoother than ever
Randy (verified owner) –
Great customer support and fast dispatch
Lucienne (verified owner) –
Perfect for gaming and multitasking
Priscilla (verified owner) –
It’s working, but I’ll upgrade soon
Lois (verified owner) –
Met my expectations but not blown away
Raquel (verified owner) –
Exactly as described and works great
Pasquale (verified owner) –
My FPS increased significantly after installation
Lorena (verified owner) –
Fair quality, feels a bit outdated
Percy (verified owner) –
Fan gets loud during gaming
Louise (verified owner) –
Does the job well, no major complaints
Margaux (verified owner) –
Top-notch performance and easy installation
Lance (verified owner) –
Zero compatibility issues, great experience
Marisol (verified owner) –
Happy overall, just had to replace a missing screw
Napoleon (verified owner) –
Performs well, packaging could be better
Nikita (verified owner) –
Works great but shipping took a bit longer than expected
Morris (verified owner) –
Worked as expected, a bit bulky though
Percival (verified owner) –
Reliable, powerful, and works as expected
Monserrat (verified owner) –
Very stable even under heavy load
Norwood (verified owner) –
Very satisfied, just a small scratch on arrival
Max (verified owner) –
Helped speed up my PC noticeably
Madilyn (verified owner) –
Good value but no included cables
Leland (verified owner) –
Solid quality and very quiet in operation
Melody (verified owner) –
Would definitely buy again from this store
Morton (verified owner) –
Highly recommend for any PC build
Laury (verified owner) –
Excellent packaging and genuine product
Norene (verified owner) –
A must-have upgrade for any serious gamer
Norval (verified owner) –
Worked after a few restarts
Rachel (verified owner) –
Speed boost was immediately noticeable
Moses (verified owner) –
Fair price and great service
Nyla (verified owner) –
Very efficient and stays cool
Leann (verified owner) –
Delivered ahead of time and well packed
Merle (verified owner) –
Decent thermal performance, not the best
Oral (verified owner) –
Installation was simple and quick