NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Watts - 80 Plus Gold - 12V-2x6 Connector - Zero Fan Mode - 100% Japanese Capacitors - White
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AI Verdict
This 850-watt, ATX 3.1, 80 Plus Gold, fully modular power supply with a 12V-2x6 connector is for modern gaming PCs needing stable power.
This NZXT C850 Gold ATX 3.1 PSU is a strong fit for modern gaming systems, especially those with NVIDIA RTX 40 series GPUs, due to its ATX 3.1 compliance and dedicated 12V-2x6 connector. Its 850-watt output, Cybenetics Platinum efficiency, and A++ noise rating ensure stable and quiet power delivery for demanding components. The fully modular design also simplifies installation and cable management.
If you're planning extreme overclocking or a multi-GPU setup, consider a 1000W or higher PSU with a Cybenetics Titanium efficiency rating for even greater headroom and efficiency.
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Pros
- Compliant with ATX 3.1 standard, ensuring stability and power spike resistance for high-performance components.
- Includes a 12V-2x6 connector capable of supplying up to 600 watts to NVIDIA GeForce RTX 40 Series graphics cards.
- Achieves Cybenetics Platinum efficiency and Cybenetics A++ noise level, indicating high energy efficiency and quiet operation.
- Features 100% premium Japanese 105°C-rated capacitors for improved hold-up time and minimal ripple noise.
- 135mm fluid dynamic bearing fan operates silently under 50% load with Zero Fan Mode.
- Fully modular design allows for connecting only essential cables, reducing clutter.
Cons
- Cables can be stiff, potentially making routing cumbersome in some builds.
- Fan noise can become surprisingly audible under heavy load, despite 'whisper quiet' claims.
- Aesthetic design is considered bland by some users, lacking RGB lighting.
- The 150mm length, while compact, might not be the absolute smallest option for ultra-tight compact builds.
- Some users perceive it as overpriced compared to competitors offering similar features.
Dimension Scores
The 850-watt output, 80 PLUS Gold and Cybenetics Platinum efficiency ratings, and ATX 3.1 compliance with low ripple/noise demonstrate top-tier performance.
It boasts a Cybenetics A++ noise level and Zero Fan Mode under 50% load, making it very quiet for most use cases, though some users report audible fan noise under heavy load.
The use of 100% premium Japanese 105°C-rated capacitors and strong resilience to brownouts indicate high-quality construction and reliability.
Its fully modular design and sleeved cables are beneficial for cable management, but some users find the cables stiff, which can hinder routing flexibility.
Best For
- High-end gaming PCs featuring NVIDIA RTX 40 Series graphics cards.
- PC builds prioritizing power stability and efficiency with ATX 3.1 compliance.
- Users seeking a clean, white aesthetic for their internal PC components.
- Systems where quiet operation under light loads is a priority.
Not Recommended For
- Budget-focused PC builders looking for the lowest cost per watt.
- Users who require an ultra-compact power supply shorter than 150mm.
- Enthusiasts who prioritize customizable RGB lighting on their PSU.
Watch Out For
- The included cables are moderately flexible but some users report them as stiff, which can complicate cable management in smaller cases.
- While quiet under light loads, the 135mm fan can produce noticeable noise when the PSU is under significant stress.
- The 7-year warranty, while substantial, is shorter than the 10-year warranties offered by some competitors in the premium PSU market.
- Some users have reported the product as being overpriced compared to other PSUs with similar specifications.
Full Specifications
| ASIN | B0D1VCY51R |
| Brand | NZXT |
| Color | White |
| Series | PA-8G2BW-US 26403460 |
| Wattage | 850 watts |
| Model Name | PA-8G2BW-US 26403460 |
| Form Factor | ATX |
| Item Weight | 8.01 pounds |
| Manufacturer | NZXT |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 850 |
| Item model number | PA-8G2BW-US |
| Compatible Devices | Desktop PC |
| Product Dimensions | 6.3 x 5.91 x 3.39 inches |
| Item Dimensions LxWxH | 6.3 x 5.91 x 3.39 inches |
| Item dimensions L x W x H | 6.3 x 5.91 x 3.39 inches |
What Buyers Say
Users are generally happy with the NZXT C850 Gold ATX 3.1, especially its readiness for modern GPUs with the 12V-2x6 connector and its quiet operation during light tasks. However, a recurring theme is the stiffness of the cables, which can make building a bit of a wrestling match, and some folks have noticed the fan kicking in louder than expected when the system is really working hard. The white aesthetic is a hit for matching specific builds, but the price point has raised a few eyebrows.
“This PSU is fine, powers my 4080 no problem, but those cables are a pain to bend and it gets a bit whiny when I'm really pushing it, kinda wish it was cheaper for what it is.”
Common Praise
- ATX 3.1 compliance and the 12V-2x6 connector are perfect for new NVIDIA RTX 40 Series cards.
- The Zero Fan Mode keeps it completely silent during web browsing or light gaming.
- Provides stable power delivery, even under demanding loads.
- The white finish looks clean and integrates well into white-themed PC builds.
- Fully modular design simplifies the building process and reduces cable clutter.
Common Complaints
- The included cables are stiff and difficult to bend, making clean cable routing a chore.
- The fan can become noticeably loud when the system is under heavy load, contradicting 'whisper quiet' expectations.
- Some buyers feel the price is a bit high compared to other 850W Gold-rated PSUs.
- The packaging is basic and doesn't feel premium for the price.
- Lack of RGB lighting is a downside for users who want more aesthetic customization.
Ownership Tips
- The stiff cables can be a real struggle to manage in smaller or more compact PC cases, requiring extra force to route neatly.
- Zero Fan Mode works exactly as advertised, keeping the system dead silent during everyday tasks like browsing or video streaming.
- During intense gaming sessions or heavy rendering, the fan noise becomes noticeable, shifting from silent to a distinct hum.
- The white finish holds up well and doesn't yellow over time, maintaining a clean look.
- The 12V-2x6 connector feels secure, but double-checking the connection is still a good habit to ensure full power delivery to the GPU.
Frequently Asked Questions
Is this power supply truly quiet?
Yes, the 135mm fluid dynamic bearing fan features a Zero Fan Mode, making it completely silent when under 50% load. However, some users report it can get audibly loud under heavy system loads.
Does it support NVIDIA RTX 40 Series graphics cards?
Absolutely, it's 40 Series Ready with a durable, heat-resistant 12V-2x6 connector that can deliver up to 600 watts to your GPU.
What kind of warranty does this PSU come with?
The NZXT C850 Gold ATX 3.1 PSU is backed by a 7-year warranty.
Are the cables easy to manage?
The PSU is fully modular, allowing you to use only the cables you need. The cables are sleeved and moderately flexible, but some users find them a bit stiff, which can make routing challenging.
Is this power supply suitable for compact PC cases?
With a length of 150mm, it's considered a compact ATX power supply, which helps optimize case space. However, some users still find it not the smallest for extremely tight builds.
Buying Guide
When picking a power supply, you're essentially choosing the heart of your PC. You need enough wattage to power all your components, especially your graphics card and CPU. Efficiency ratings like '80 Plus Gold' tell you how much power is wasted as heat, so higher is better for your electricity bill and less heat inside your case. Modularity means you only plug in the cables you need, which is a huge win for keeping your build tidy and improving airflow. And with newer components, ATX 3.1 compliance is key for handling power spikes without issues.
Wattage (850 watts)
80 PLUS Gold & Cybenetics Platinum Efficiency
Fully Modular
ATX 3.1 & 12V-2x6 Connector
Alternatives
If this 850W unit isn't enough, look for power supplies with 1000W or higher wattage. For even greater efficiency, search for units with Cybenetics Titanium or 80 Plus Platinum ratings. If you need a different aesthetic, consider models with integrated RGB lighting or different color options.
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