be quiet! System Power 11 650w Power Supply
£48.98
In stock
PROVEN RELIABILITY, QUIET OPERATION
be quiet! System Power 11 650W
System Power 11 650W has been built with value-oriented users in mind that do not want to pass on reliability and quietness. ATX 3.1 compatibility and a temperature-controlled fan underline the value it offers even at entry-level.
80 PLUS® Bronze (up to 89.7%)
Temperature-Controlled 120mm Fan
Stand-by Drain < 0.15W
System Power 11 650W highlights ATX 3.1 compatibility, PCIe 5.1-ready connectivity, and quiet cooling with a temperature-controlled 120mm fan.
Core Highlights
- ATX 3.1 PSU with support for PCIe 5.1 GPUs and GPUs with 6+2 pin connectors
- Temperature-controlled 120mm quality fan reduces system noise
- Rock-solid stability with a strong 12V-rail
- Tight voltage regulation using DC-to-DC technology
- One PCIe 5.1 12V-2×6 450W and 2 PCIe 6-2 connectors
- Stand-by drain of less than 0.15 watts
- 80 PLUS® Bronze efficiency (up to 89.7%)
Future-Proof Your System
System Power 11 650W fulfills all ATX 3.1 specifications and is designed to keep your build ready for the next generation. It comes with native integration of the 12V-2×6 connector for PCIe 5.1 graphics cards, plus PCIe 6+2-pin connectors for support of current-gen GPUs. It handles power excursions up to double its rated power with ease — making it a versatile choice for systems of today and the ones to come.
PCIe 5.1 (12V-2×6)
PCIe 6+2 Support
Very Quiet Operation
Equipped with a temperature-controlled 120mm quality fan, System Power 11 650W delivers the low-noise operation be quiet! is famous for offering remarkable quietness at this price-level.
Temperature-Controlled Cooling
High Performance for Your System
System Power 11 650W provides stable and dependable power for CPU and GPU. Rock-solid stability with a strong 12V-rail helps ensure steady operation even when your PC meets an unexpectedly heavy load.
Stable CPU & GPU Power
80 PLUS® Bronze Certification
The 80 PLUS® Bronze certification of System Power 11 650W with an efficiency rating of up to 89.7% is convincing evidence of this PSU’s power saving operation helping reduce wasted energy while maintaining proven reliability.
Up to 89.7% Efficiency
Efficient Operation
General Specifications
Performance & Efficiency
Cooling & Acoustics
Power Rails & Output
Connectivity & Cables
Protection & Safety
Physical & Build
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| Datasheet | |
| Cables | JPG |
| Performance curve | JPG |
About be quiet!
be quiet! is a premium German PC hardware brand, recognised worldwide for designing high-performance components with an uncompromising focus on silence.
Founded in Germany, be quiet! has earned the trust of enthusiasts, gamers, creators and system builders the world over through exceptional build quality, reliability and near-silent operation.
German Engineering
Premium Components
Long Warranties
Designed in Germany
Every be quiet! product is engineered and quality-controlled in Germany, with meticulous attention to acoustics, airflow, thermals and long-term durability.
That engineering-first approach means each one performs exactly as intended: quietly and efficiently.
What be quiet! is known for
- Ultra-quiet, high-efficiency power supplies
- High-performance CPU coolers with silent operation
- Low-noise PC cases optimised for airflow and reduced vibration
- Premium fans engineered for strong airflow at minimal noise
Trusted by enthusiasts and professionals
be quiet! hardware is widely used in gaming PCs, professional workstations, content-creation systems, and quiet home and office builds.
As an authorised UK service centre, we supply genuine be quiet! products backed by full manufacturer warranty and local UK support.
Shipping & Delivery Information
Dispatch cut-off: 2:00pm
UK shipping only
- 🚚
UK mainland: Free standard next-day / 2-day delivery (subject to courier terms). - ⏱️
Same-day dispatch: Order before 2:00pm Monday–Friday. - 📍
Extended areas: Highlands, NI, ROI & Channel Islands typically 2–5 working days. - 🛑
No collection: We ship orders only.
Shipping Only
Please note that we do not offer collections. All orders are shipped via our courier partners.
Delivery services are subject to courier availability and local conditions.
Weekend Orders
Orders placed after 2:00pm on Friday or during the weekend
are processed on the next working day (normally Monday).
Bank holidays may also affect dispatch and delivery times.
UK Delivery
Free standard next-day / 2-day to UK mainland (subject to courier terms)
- ✅Free standard delivery on all orders
- 📦UK mainland only for next-day / 2-day services
- 🕑Cut-off: order before 2:00pm (Mon–Fri) for same-day dispatch
Extended Delivery Areas
Typically 2–5 working days
- 🏔️Scottish Highlands
- 🇬🇧Northern Ireland
- 🇮🇪Republic of Ireland
- 🏝️Channel Islands
Delivery times can vary depending on courier availability and local conditions.
International Shipping
We do not ship outside the UK
Delivery times are estimates and may be affected by courier delays outside of our control.
