NZXT C1200 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 1200 Watts - 80 Plus Gold - 12V-2x6 Connector - Zero Fan Mode - 100% Japanese Capacitors - White
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AI Verdict
This 1200W ATX 3.1, 80 PLUS Gold PSU with a 12V-2x6 connector is for high-end gaming rigs, but serious protection test failures raise concerns.
This 1200-watt, 80 PLUS Gold, ATX 3.1 power supply is a strong contender for high-performance builds needing a 12V-2x6 connector. However, the reported failures in demanding protection tests by LTT Labs introduce a significant concern regarding its long-term reliability under extreme conditions, making it a situational fit for users who understand and accept this risk.
If the protection test failures are a deal-breaker, look for PSUs with a proven track record of passing all rigorous safety and protection tests from independent labs.
Regret Score™
Medium RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Compliant with ATX 3.1 standard for stability and power spike resistance with high-performance components.
- Includes a 12V-2x6 connector capable of delivering up to 600 watts to NVIDIA GeForce RTX 40 Series graphics cards.
- Achieved 80 PLUS Gold and Cybenetics Gold efficiency certifications, indicating less wasted power.
- Features a 135mm fluid dynamic bearing fan with Zero Fan Mode, operating silently under 50% load.
- Constructed with 100% premium Japanese capacitors for improved hold-up time and minimal ripple noise.
- Fully modular design allows for connecting only essential cables, reducing clutter and improving airflow.
Cons
- Two samples failed 12V rail OCP (Over Current Protection) tests, with one emitting sparks and becoming unresponsive during demanding lab testing.
- The fully modular cables are described as stiff, potentially making cable management challenging during installation.
- Despite its compact dimensions (150 x 86 x 160 mm), its size and weight might be challenging for installation in very tight or compact PC cases.
Dimension Scores
The 1200-watt output combined with 80 PLUS Gold and Cybenetics Gold efficiency certifications places it in the top tier for power delivery and efficiency.
Its Cybenetics A- Noise Level rating and Zero Fan Mode, which keeps the 135mm fan silent under 50% load, provide excellent low-noise operation.
While it uses 100% premium Japanese capacitors for improved hold-up time and minimal ripple noise, independent lab testing revealed failures in 12V rail OCP, raising concerns about overall robustness under stress.
The fully modular design is excellent for reducing cable clutter, though the reported stiffness of the cables can make routing more challenging than average.
Best For
- Powering high-end gaming PCs featuring NVIDIA RTX 40 Series GPUs and demanding CPUs.
- PC builds where stable 1200-watt power delivery and ATX 3.1 compliance are critical.
- Users prioritizing low noise operation, especially during light to moderate system loads (under 50% load).
- Systems where power efficiency is a key consideration to reduce energy consumption.
Not Recommended For
- Budget PC builds where 1200 watts of power is significantly more than required.
- Compact ITX or small form factor builds that require exceptionally small PSU dimensions.
- Users unwilling to risk potential reliability issues highlighted by rigorous protection testing failures.
Watch Out For
- LTT Labs reported that two samples of this PSU failed 12V rail Over Current Protection tests, with one unit sparking and becoming unresponsive, leading them to not recommend the product.
- The included fully modular cables are noted to be quite stiff, which can make routing and managing them difficult, especially in cases with limited space.
- While generally quiet due to its Zero Fan Mode, some users have reported concerns about coil whine in older models, though newer ATX 3.1 versions aim to reduce this.
Full Specifications
| ASIN | B0D1VDQ8KP |
| Brand | NZXT |
| Color | White |
| Series | PA-2G2BW-US 26403556 |
| Wattage | 1200 watts |
| Model Name | PA-2G2BW-US 26403556 |
| Form Factor | ATX |
| Item Weight | 8.34 pounds |
| Manufacturer | NZXT |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 1200 |
| Item model number | PA-2G2BW-US |
| Compatible Devices | Desktop PC |
| Product Dimensions | 6.3 x 5.91 x 3.39 inches |
| Power Supply Design | Full Modular |
| 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
The most striking feedback for the NZXT C1200 Gold ATX 3.1 is the LTT Labs report detailing failures during demanding 12V rail Over Current Protection tests, with one unit even sparking. This has led to significant discussion among potential buyers, with some Reddit users questioning its reliability and suggesting alternatives. Despite these concerns, other users praise its quiet operation, especially with the Zero Fan Mode, and its overall efficiency. The fully modular cables are appreciated for tidiness but are noted to be stiff during installation.
“Man, I really wanted this white PSU for my build, it looks so clean and the zero fan mode is sweet, but seeing those LTT test failures makes me super nervous, like, do I really wanna risk my expensive GPU on that?”
Common Praise
- The power supply runs 'quiet as heck' with no audible coil whine during operation.
- Zero Fan Mode keeps the unit completely silent when the PC is under 50% load.
- The 80 PLUS Gold and Cybenetics Gold certifications deliver high power efficiency.
- Fully modular design makes for a clean build with only necessary cables connected.
- Good brownout performance, sustaining power dropouts for up to 26 milliseconds at full load.
Common Complaints
- Two samples failed 12V rail OCP tests, with one unit sparking and becoming unresponsive.
- The included modular cables are stiff, making them difficult to bend and route for cable management.
- Some users are hesitant to purchase due to the reported protection test failures, despite other positive attributes.
Ownership Tips
- The Zero Fan Mode genuinely keeps the system silent during web browsing and light gaming, with the fan only spinning up under heavy loads.
- Cable stiffness is a real factor; plan your cable routing carefully before installation to avoid frustration.
- The compact form factor is generally fine for most ATX cases, but it's not a 'mini' PSU, so double-check dimensions for smaller builds.
- The 12V-2x6 cable length (65cm) is sufficient for most standard ATX cases, reaching GPUs without needing extensions.
Frequently Asked Questions
Is this power supply compatible with NVIDIA RTX 40 Series graphics cards?
Yes, it is ATX 3.1 compliant and includes a dedicated 12V-2x6 connector that can deliver up to 600 watts, specifically designed for RTX 40 Series GPUs.
Does this PSU operate silently?
It features a Zero Fan Mode where the 135mm fan stops spinning under 50% load, making it completely silent during light to moderate use. It also has a Cybenetics A- Noise Level rating.
What does 'fully modular' mean for this power supply?
Fully modular means all cables are detachable from the power supply unit. This allows you to connect only the cables your system needs, reducing clutter and improving airflow inside your PC case.
What is the warranty period for this power supply?
NZXT backs this power supply with a 10-year warranty, demonstrating confidence in its long-term reliability.
Are the cables flexible for easy routing?
User feedback indicates the fully modular cables are quite stiff, which might make them less flexible and potentially harder to route and manage in some PC builds.
Buying Guide
When you're looking at a power supply like this, you're basically buying the heart of your PC. It converts wall power into usable power for all your components. You need enough wattage for your CPU and GPU, but also stable and clean power delivery to prevent issues. Efficiency ratings like 80 PLUS Gold tell you how much power is wasted as heat, which impacts your electricity bill and how hot your case gets. ATX 3.1 compliance and the 12V-2x6 connector are crucial for modern, high-power graphics cards, ensuring they get the juice they need without problems.
Wattage (1200 watts)
This is the total power your PSU can supply. For high-end gaming PCs with powerful CPUs and GPUs like the RTX 40 Series, 1200 watts provides ample headroom, preventing your system from crashing under load and allowing for future upgrades.
80 PLUS Gold Efficiency
This certification means the PSU is at least 87% efficient at 20% and 100% load, and 90% efficient at 50% load. Higher efficiency means less electricity is wasted as heat, saving you money on your power bill and keeping your PC cooler.
ATX 3.1 Standard & 12V-2x6 Connector
ATX 3.1 is the latest power supply standard, designed for the transient power spikes of modern GPUs. The 12V-2x6 connector is a dedicated cable that can deliver up to 600 watts directly to high-end graphics cards, preventing the need for multiple adapter cables and ensuring stable power delivery.
Fully Modular
This refers to the cables. A fully modular PSU lets you detach every cable, so you only plug in what you need. This makes building your PC much cleaner, improves airflow inside the case by reducing clutter, and simplifies troubleshooting.
Alternatives
If this PSU's protection test failures are a concern, look for 1000W-1200W ATX 3.1 PSUs from other brands with 80 PLUS Gold or Platinum ratings, a 12V-2x6 connector, and a proven track record in independent, rigorous stress testing.
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