be quiet! Pure Power 12 M 1200W Modular Power Supply | 80 Plus® Gold | ATX 3.1 | PCIe 5.0 GPUs and 6+2 pin connectors | 12VHPWR Cable Included | Silent 120mm be quiet! Fan - BN513 I 10 Year Warranty
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AI Verdict
This 1200W 80 Plus Gold ATX 3.1 PSU with a 120mm fan and 10-year warranty is for high-power PC builds needing PCIe 5.0 GPU support.
This 1200W 80 Plus Gold ATX 3.1 power supply is a strong fit for high-performance systems, especially those with current or future PCIe 5.0 GPUs, due to its high efficiency, power stability, and dedicated 12VHPWR connector. The 10-year warranty also provides long-term assurance.
If 1200W is overkill for your setup, consider a lower wattage Pure Power 12 M model (e.g., 850W or 1000W) to save money while retaining ATX 3.1 and PCIe 5.0 features.
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Pros
- Achieves up to 93.7% efficiency, reducing energy waste and operating costs.
- Includes a 12VHPWR 600W connector and 4x PCIe 6+2 connectors for current and next-gen GPUs.
- Features a temperature-controlled 120mm fan designed for near-silent operation.
- Offers fully modular cabling, simplifying installation and improving case airflow.
- Provides 1200W continuous power with dual 12V rails and handles transient spikes up to 2000W.
- Backed by a 10-year manufacturer's warranty.
Cons
- Some users report faint coil whine, particularly noticeable in quiet systems.
- Cables are described as stiff, making cable routing and management challenging in some builds.
- One user reported the 24-pin motherboard cable was short and misaligned for an MSI Z790-P board.
- A user found the included PCIe cables/ports insufficient for a 9070 XT requiring two PCIe cables.
- Documentation is unclear, potentially confusing less experienced builders during installation.
Dimension Scores
The 80 Plus Gold certification with up to 93.7% efficiency and 1200W continuous power with 2000W transient spike handling is top-tier for its class.
Equipped with a silence-optimized 120mm be quiet! fan with temperature control, it operates very quietly, though some users report faint coil whine.
It features LLC technology for voltage regulation, dual 12V rails, and a 10-year warranty, indicating robust internal components and manufacturing.
While fully modular, the cables are noted by users as stiff, which can complicate routing and lead to less tidy builds.
Best For
- High-end gaming PCs with power-hungry PCIe 5.0 graphics cards.
- Workstation builds requiring stable 1200W continuous power delivery.
- Users prioritizing quiet operation in a high-wattage power supply.
- PC builders who value a long warranty period for critical components.
Not Recommended For
- Budget-constrained builds where 1200W is excessive and more affordable options exist.
- Compact SFF (Small Form Factor) cases due to its standard ATX form factor and potentially stiff cables.
- Users who frequently swap out cables and prefer universal third-party cable compatibility.
Watch Out For
- Faint coil whine has been reported by some users, which might be audible in very quiet environments.
- The included cables are stiff, making tight bends and clean cable management difficult in smaller cases.
- One user experienced the 24-pin motherboard cable being too short and misaligned for their MSI Z790-P motherboard.
- A user noted a lack of sufficient PCIe cables/ports for their 9070 XT graphics card, which needed two PCIe cables.
- The documentation provided is not detailed enough, potentially leading to confusion for new PC builders.
Full Specifications
| ASIN | B0CBP3C2S9 |
| Brand | be quiet! |
| Wattage | 1200 watts |
| Model Name | BN513 |
| Form Factor | ATX |
| Item Weight | 7.17 pounds |
| Manufacturer | be quiet! |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 1200 Watts |
| Item model number | BN513 |
| Compatible Devices | PC |
| Product Dimensions | 6.3 x 3.39 x 5.91 inches |
| Power Supply Design | Full Modular |
| Item dimensions L x W x H | 6.3 x 3.39 x 5.91 inches |
What Buyers Say
Many users are stoked about how quiet this power supply runs, often saying their system fans are louder than the PSU itself. The fully modular design gets a lot of praise for making builds cleaner, but some folks ran into issues with cable stiffness, making it a bit of a wrestle to get them routed nicely. There are also specific complaints about the 24-pin motherboard cable being short or misaligned for certain motherboards, and some found the number of PCIe cables limiting for their GPU setups.
“Man, this thing is QUIET, like, seriously, I can't even hear it over my CPU cooler, but those cables are a pain to bend, almost broke my fingers trying to get them neat! And I wish it had one more PCIe cable for my second card.”
Common Praise
- Operates with minimal fan noise, often inaudible over other system components.
- Fully modular cables simplify installation and reduce clutter in the PC case.
- Provides stable and consistent power delivery even under heavy loads.
- Includes the 12VHPWR connector, making it ready for modern high-end GPUs.
- The 10-year warranty offers long-term peace of mind.
Common Complaints
- Faint coil whine is sometimes present, especially at idle or low loads.
- Cables are stiff, making them difficult to bend and manage in tight spaces.
- The 24-pin motherboard cable was reported as too short and misaligned by one user for an MSI Z790-P board.
- Some users found the number of PCIe cables or ports insufficient for their specific multi-GPU or high-power GPU needs.
- The included documentation is not very helpful for detailed installation guidance.
Ownership Tips
- The faint coil whine, if present, often becomes less noticeable or disappears after a few weeks of use.
- You might need to spend extra time on cable management due to the cable stiffness, especially in smaller cases.
- Double-check your motherboard's 24-pin connector alignment and cable length requirements, as some users reported issues.
- Verify the number of PCIe 6+2 connectors needed for your specific GPU setup, as the included ones might be limiting for some configurations.
Frequently Asked Questions
Is this power supply compatible with ATX 3.0 motherboards?
Yes, the Pure Power 12 M 1200W is ATX 3.1 compliant, which is backward compatible with ATX 3.0 specifications and earlier ATX standards.
Does it include the 12VHPWR cable for new graphics cards?
Yes, it comes with one native PCIe 5.0 12VHPWR 600W connector, along with four additional PCIe 6+2 connectors for other GPUs.
How quiet is the fan?
It uses a silence-optimized 120mm be quiet! fan with temperature-controlled speed adjustments, designed for near-silent operation even under heavy loads.
What is the warranty period for this power supply?
The be quiet! Pure Power 12 M 1200W comes with a 10-year manufacturer's warranty.
Are the cables fully modular?
Yes, all cables are fully modular, allowing for easier cable management and improved airflow within your PC case.
Can this PSU handle power spikes from high-end GPUs?
Yes, it's designed to handle transient power spikes up to 2000W, ensuring stable performance for demanding graphics cards.
Buying Guide
When you're looking at a power supply, you're basically picking the heart of your PC. It needs to deliver enough juice to all your components without breaking a sweat, especially your graphics card and CPU. You also want it to do its job efficiently, so it doesn't waste electricity as heat, and quietly, so your PC isn't roaring like a jet engine. Modularity is also key for a clean build, letting you only plug in the cables you actually need.
Wattage (1200W)
This is the maximum power your PSU can supply. For high-end gaming rigs with powerful GPUs (like an RTX 4090) and CPUs, 1200W provides ample headroom, preventing system instability during peak loads and allowing for future upgrades.
80 Plus Gold Efficiency
This rating tells you how much power from the wall socket actually reaches your components, versus how much is lost as heat. Gold means at least 87-90% efficiency, which translates to lower electricity bills, less heat generated inside your case, and a cooler, quieter system.
ATX 3.1 & PCIe 5.0 Support
This ensures your power supply is compatible with the latest generation of motherboards and graphics cards. The PCIe 5.0 standard, especially with the 12VHPWR connector, is crucial for modern high-power GPUs, as it can deliver up to 600W through a single cable, simplifying connections and ensuring stable power delivery.
Fully Modular
This means you only connect the cables your PC needs, leaving out the rest. It makes building much easier, reduces cable clutter inside your case, and improves airflow, which helps keep components cooler.
Alternatives
If this wattage is too high, look for 850W or 1000W ATX 3.1 80 Plus Gold PSUs. If cable stiffness is a major concern, search for PSUs known for more flexible, individually sleeved cables.
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