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 - Black
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AI Verdict
A 1200-watt, ATX 3.1 power supply with a 12V-2x6 connector for RTX 40/50 series GPUs, but it failed protection tests in some professional reviews.
This 1200-watt ATX 3.1 power supply is designed for high-performance systems, especially those with power-hungry RTX 40/50 series GPUs, thanks to its 12V-2x6 connector. However, its suitability is tempered by professional test failures related to protection mechanisms, which raise concerns about its reliability under extreme conditions.
If you need absolute peace of mind regarding protection circuit robustness, look for PSUs with flawless professional protection test results, even if it means sacrificing some wattage or paying a premium.
Regret Score™
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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 power stability and efficiency with modern components.
- Includes a 12V-2x6 connector capable of delivering up to 600 watts to NVIDIA RTX 40/50 Series graphics cards.
- Achieved 80 PLUS Gold and Cybenetics Gold Efficiency ratings, 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.
- Backed by a 10-year warranty, demonstrating manufacturer confidence in longevity.
Cons
- Two samples failed 12V rail Over Current Protection (OCP) tests, with one emitting sparks and becoming unresponsive.
- Cables are described as stiff, potentially making cable management challenging during PC assembly.
- Its 160mm length might be too large for some compact PC cases, limiting build options.
- Some professional reviews cannot recommend the unit due to protection test failures.
Dimension Scores
The 1200-watt output and 80 PLUS Gold and Cybenetics Gold Efficiency ratings are above average for power delivery and energy conservation.
With a Cybenetics A- Noise Level rating and Zero Fan Mode under 50% load, it offers near-silent operation for a significant portion of its use.
While it uses 100% Japanese capacitors and has a 10-year warranty, the reported failures during professional protection testing raise concerns about its robustness under extreme conditions.
It's fully modular, which aids in cable management, but the stiffness of the cables can make routing more difficult than average.
Best For
- High-end PC builds requiring 1200 watts for components like RTX 40/50 series GPUs.
- Users prioritizing quiet operation, as the fan stops under 50% load.
- Enthusiasts building with the latest ATX 3.1 standard for future compatibility.
Not Recommended For
- Users who prioritize absolute proven reliability under extreme stress testing conditions.
- Compact PC builds where the 160mm length could cause fitment issues.
- Builders who dislike stiff cables and prefer highly flexible options for easier routing.
Watch Out For
- Professional testing revealed that two samples failed 12V rail OCP, with one unit sparking and becoming unresponsive during testing.
- The included cables are stiff, making them difficult to bend and route neatly within a PC case.
- The 160mm depth of the power supply might prevent installation in smaller form factor cases.
- Some users on Reddit express concern about the PSU's reliability based on professional test results.
Full Specifications
| ASIN | B0D1VDNCT7 |
| Brand | NZXT |
| Color | Black |
| Series | NZXT C1200 Gold |
| Wattage | 1200 watts |
| Model Name | NZXT C1200 Gold |
| Form Factor | ATX |
| Item Weight | 8.29 pounds |
| Manufacturer | NZXT |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 1200 |
| 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
Professional reviews highlight significant concerns, with two samples failing 12V rail Over Current Protection tests, one even sparking and becoming unresponsive. This has led some to explicitly not recommend the unit, despite its strong specifications like ATX 3.1 compliance and a 12V-2x6 connector for modern GPUs. Users on Reddit are divided, with some reporting quiet, stable operation, while others express apprehension due to the test failures. The cables are noted for being stiff, which can complicate building.
“Man, I was hyped for this 1200W ATX 3.1 PSU with the new cable, but seeing those LTT test failures where it literally sparked? That's a hard pass for me, not risking my expensive GPU on that.”
Common Praise
- The 12V-2x6 cable delivers up to 600 watts to RTX 40/50 series GPUs.
- The fan remains silent when the power supply is under 50% load.
- The fully modular design helps reduce cable clutter inside the PC case.
- The unit maintains stable power delivery with minimal ripple noise.
- It comes with a 10-year warranty for long-term peace of mind.
Common Complaints
- Two samples failed 12V rail OCP tests, with one unit sparking and becoming unresponsive.
- The cables are stiff, making them hard to manage and route neatly.
- The 160mm depth can be problematic for installation in smaller cases.
- Concerns about overall reliability due to professional test failures.
Ownership Tips
- The fan truly doesn't spin up unless you're pushing your system, keeping things quiet most of the time.
- Routing the stiff cables requires more patience and planning than with other PSUs.
- The 12V-2x6 connector feels secure and delivers power without issues to my RTX 4090.
- The unit's physical size needs to be double-checked against your case's PSU clearance.
Frequently Asked Questions
What is the 12V-2x6 connector for?
The 12V-2x6 connector is a durable, heat-resistant cable designed to deliver up to 600 watts of power directly to NVIDIA GeForce RTX 40 and upcoming 50 Series graphics cards.
Does this power supply make a lot of noise?
No, it features a 135mm fluid dynamic bearing fan with a Zero Fan Mode, meaning the fan stops spinning completely when the power supply is under 50% load, making it silent during light use. It also has a Cybenetics A- Noise Level rating.
Is this the ATX 3.0 or ATX 3.1 version?
This is the ATX 3.1 version, which includes the improved 12V-2x6 connector. The older ATX 3.0 models sometimes had issues with the 12VHPWR cable.
What kind of capacitors does it use?
It uses 100% premium Japanese capacitors, which are known for improving hold-up time and minimizing ripple noise for stable power delivery.
What is the warranty period for this PSU?
NZXT backs this power supply with a 10-year warranty.
Buying Guide
When buying a power supply, you're essentially getting the heart of your PC. You need enough wattage for all your components, especially your graphics card, but also consider efficiency to save on electricity and reduce heat. The ATX 3.1 standard and 12V-2x6 connector are crucial for the latest high-power GPUs, ensuring stable and safe power delivery. Don't overlook modularity, as it makes building and cable management much easier.
Wattage (1200 watts)
This is the total power your PSU can provide. Think of it like the engine size in a car; a higher number means more power for demanding components like high-end graphics cards and CPUs. 1200W is for serious gaming rigs or workstations.
ATX 3.1 Standard
This is the latest industry standard for power supplies, designed to handle the transient power spikes of modern GPUs. It's like having a more robust electrical system in your house, preventing brownouts when a big appliance kicks on.
12V-2x6 Connector
This is a dedicated, high-power cable specifically for NVIDIA's RTX 40 and 50 series graphics cards. It's a direct, safer connection that can deliver up to 600 watts, avoiding the need for multiple adapter cables that can be messy and less reliable.
Fully Modular
This means you only plug in the cables you actually need for your components. It's like having custom-length cables for your stereo system instead of a tangled mess, making your PC build cleaner and improving airflow.
Alternatives
If this PSU doesn't fit, look for other 1000W-1200W ATX 3.1 power supplies with a 12V-2x6 connector that have consistently passed all professional protection tests and offer more flexible cabling.
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