be quiet! 550W System Power 10 PSU, 80+ Bronze, Fully Wired, Strong 12V Rail, Temp. Controlled Fan
Bottom line: The be quiet! 550W System Power 10 PSU: Temperature-controlled 120mm fan keeps noise low; main trade-off: 550W ceiling limits high-draw GPU headroom.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Pros & Cons
Pros
- ✓ Temperature-controlled 120mm fan keeps noise low
- ✓ 80 PLUS Bronze certified, up to 89.1% efficiency
- ✓ DC-to-DC circuitry holds tight voltage regulation
- ✓ Standby draw under 0.15W cuts idle waste
Cons
- ✗ 550W ceiling limits high-draw GPU headroom
- ✗ Fully wired, so unused cables clutter the build
- ✗ Bronze efficiency trails Gold and Platinum units
- ✗ Priced at a tier where Gold PSUs compete
Manufacturer description
Very Quiet Operation High-quality fan for low noise System Power 10 550W is equipped with a temperature-controlled 120mm quality fan. It provides the low noise operation that be quiet! is famous for, offering remarkable quietness at this price-level. High Performance For Your System Proven reliability for CPU and GPU System Power 10 550W provides stable and dependable power for CPU and GPU. This ensures a steady and reliable operation even when your PC meets an unexpectedly heavy load. 80 PLUS® Bronze Certification Efficient operation The 80 PLUS Bronze certification of System Power 10 550W…
SpecPicks Verdict
SpecPicks scored be quiet! 550W System Power 10 PSU using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. be quiet!'s power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Temperature-controlled 120mm quality fan reduces system noise
- Rock-solid stability with a strong 12V-rail
- Tight voltage regulation using DC-to-DC technology
- Dependable operation to support powerful GPUs
- Stand-by drain of less than 0.15 watts
- 80 PLUS Bronze efficiency (up to 89.1%)
Full Specifications
| Brand | be quiet! |
|---|---|
| Wattage | 550 watts |
| Fan Size | 12 centimeters |
| Model Name | system power 10 |
| Unit Count | 1 Count |
| Form Factor | ATX |
| Model Number | BN327 |
| Built-In Media | Camera Body |
| Connector Type | ATX |
| Cooling Method | Air, NO |
| Number of Fans | 1 |
| Output Wattage | 550 |
| Connection Type | Wired |
| Item Dimensions | 5.91 x 5.51 x 3.39 inches |
| Mfr Part Number | BN327 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Compatible Devices | Personal Computer |
| Connector Quantity | 2 |
| Power Supply Design | Full Modular |
Ready to buy?
be quiet! 550W System Power 10 PSU, 80+ Bronze, Fully Wired, Strong 12V Rail, Temp. Controlled Fan is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related Power Supplies
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Retro Handhelds in 2026 — From $35 to $500
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
More reviews from the SpecPicks archive
Browse all reviews →- Two RTX 3060 12GB vs One Bigger GPU for Local 70B Models
- GPU Benchmark Data Freshness and Source Attribution in 2026
- Qwen 3.6 27B Quantization Showdown: BF16 vs Q8_0 vs Q4_K_M on Consumer GPUs
- Best 27-Inch 4K Gaming Monitor: KOORUI QD-Mini LED vs Samsung Odyssey
- Samsung's 360Hz 4K QD-OLED vs Budget 4K Gaming Monitors: Is the Premium Worth It?
- SANSUI 27" 4K vs KOORUI 27" QD-Mini LED: Best Sub-$400 4K Gaming Monitor
- Is the RTX 3060 12GB Still Worth It for 1080p Gaming in 2026?
- Ryzen AI Max 400 192GB vs RTX 3060 for Local LLMs
- Best PC Controller in 2026: DualSense vs GameSir G7 SE vs HORIPAD
- Best GPU for Qwen3 8B in 2026
- Crucial BX500 vs Samsung 870 EVO for Budget & Retro Builds
- Aider vs Cline vs Continue.dev for Local-LLM Coding on a 12GB GPU
- DualSense vs 8BitDo Pro 2 vs GameSir G7 SE: PC Sim Racing
- Best PC Gaming Gear for Console Players Making the Switch in 2026
- STEPLA-1 8-Bit Hardwired CPU: 74-Series Logic Explained
- Best Workstation PC Parts on Amazon in 2026
- News: ChatGPT Now Listens and Talks at Once
- Qwen 3.6 27B on 24GB VRAM: Backend, Quant + Settings Synthesis
- Sega Genesis Mini vs SNES Classic: The Definitive 2026 Plug-and-Play Retro Showdown
- 32GB of DDR5 Drops to $240 in New Newegg Build Bundles
- Imaging Big-Box CD-ROMs to CompactFlash for a Windows 98 Retro PC
- Best Raspberry Pi Starter Kit for Beginners in 2026
- Raspberry Pi 5 IOMMU Support Is Landing in the Mainline Linux Kernel
- What Fits in 12GB VRAM? RTX 3060 Local LLM Model Guide (2026)
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090