1. Introduction
The Corsair Professional Series AX1200 is a high-performance, fully modular power supply designed to deliver stable and reliable power for demanding PC systems, including SLI and CrossFire gaming configurations. Engineered for efficiency and quiet operation, the AX1200 ensures optimal performance and system longevity.
This manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of your Corsair AX1200 power supply.
2. Key Features
- High Efficiency: 80 PLUS Gold certified, delivering at least 90% efficiency at 50% load, reducing heat generation and operating costs.
- Fully Modular Cabling: All cables detach from the power supply, allowing for clean system builds with optimal airflow and simplified installation or upgrades.
- Ultra-Quiet Operation: An intelligent 120mm double ball-bearing fan adjusts speed based on temperature, providing excellent airflow at exceptionally low noise levels.
- Advanced Protection: Features Over-voltage (OVP), Over-current (OCP), Under-voltage (UVP), and Short Circuit Protection (SCP) to safeguard your critical system components.
- Dedicated +12V Rail: A single, dedicated +12V rail offers maximum compatibility and stable power delivery for the latest high-performance components.
- Premium Components: Built with high-quality Japanese capacitors for uncompromised performance and long-term reliability.
- Low-Profile Cables: Flat cable design reduces air friction, further enhancing airflow within your computer chassis.
- Broad Compatibility: Supports the latest ATX12V v2.31 and EPS 2.92 standards, backward compatible with ATX12V 2.2 and ATX12V 2.01 systems.
- Safety Approvals: UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick.
3. Setup and Installation
The fully modular design of the AX1200 simplifies installation by allowing you to connect only the cables necessary for your system. This reduces cable clutter and improves internal airflow.
Installation Steps:
- Mount the PSU: Secure the AX1200 into your PC case's power supply bay using the provided screws.
- Connect Main Power: Attach the 24-pin ATX power cable to your motherboard.
- Connect CPU Power: Connect the 8-pin (or 4+4 pin) EPS/ATX12V CPU cable(s) to your motherboard.
- Connect Graphics Card Power: Attach the necessary 6+2 pin PCI-E cables to your graphics card(s).
- Connect Peripherals: Use SATA cables for SSDs/HDDs and optical drives, and peripheral (Molex) cables for other components as needed.
- Cable Management: Utilize the low-profile, flat cables to route them efficiently within your case for optimal airflow and a clean build.
- Connect AC Power: Once all internal connections are made, connect the AC power cord to the PSU and then to a wall outlet.
Connector and Cable Lengths:
| Connector Type | Quantity | Length (mm) | Length (inches) | Connectors per cable |
|---|---|---|---|---|
| ATX Power Cable | 1 | 610mm | 24" | 1 |
| EPS/ATX12V CPU Cable | 2 | 610mm | 24" | 1 |
| PCI-E Cable (6+2 pin) | 6 | 610mm | 24" | 1 |
| SATA Cable | 3 | 850mm | 33.46" | 4 |
| SATA Cable | 2 | 600mm | 23.62" | 2 |
| Peripheral Cable | 3 | 850mm | 33.46" | 4 |
| Floppy Adapter | 2 | 100mm | 4" | 1 |
4. Operating Principles
The Corsair AX1200 operates with a focus on efficiency and stability. Its 80 PLUS Gold certification signifies that it converts over 90% of AC power into usable DC power at typical loads, minimizing wasted energy as heat. This high efficiency contributes to a cooler and quieter system environment.
The integrated 120mm fan features a double ball-bearing design for durability and operates intelligently, adjusting its speed based on the power supply's temperature. This ensures effective cooling only when needed, maintaining a low noise profile during light to moderate loads.
Active Power Factor Correction (PFC) with a PF value of 0.99 ensures that the power supply draws power from the AC mains efficiently, reducing reactive power and improving overall system stability.
5. Maintenance
To ensure the longevity and optimal performance of your Corsair AX1200 power supply, follow these simple maintenance guidelines:
- Keep Vents Clear: Ensure that the intake and exhaust vents of the power supply are not obstructed by cables or other components. Adequate airflow is crucial for cooling.
- Dust Removal: Periodically (e.g., every 6-12 months), use compressed air to gently clear dust from the power supply's fan and vents. Excessive dust buildup can impede cooling and reduce efficiency.
- Environmental Conditions: Operate the power supply in a clean, dry environment with stable temperatures. Avoid extreme heat or humidity.
6. Troubleshooting
If you encounter issues with your Corsair AX1200 power supply, consider the following basic troubleshooting steps:
- No Power:
- Ensure the AC power cord is securely connected to both the power supply and the wall outlet.
- Verify that the power switch on the back of the PSU is in the 'ON' position.
- Check all modular cable connections to ensure they are firmly seated at both the PSU and component ends.
- Test the wall outlet with another device to confirm it has power.
- System Instability/Crashes:
- Ensure your system's power requirements do not exceed the AX1200's capacity, especially with multiple high-end components.
- Verify that all power cables are correctly connected to their respective components (motherboard, CPU, GPU, drives).
- Check for any loose connections or damaged cables.
- Unusual Noise:
- Ensure the PSU fan is not obstructed by cables or dust.
- If the noise persists and is not related to fan operation, contact Corsair support.
If these steps do not resolve the issue, please refer to the Warranty and Support section for further assistance.
7. Specifications
General Specifications:
| Attribute | Value |
|---|---|
| Model Name | CMPSU-1200AX |
| Output Wattage | 1200 Watts |
| Form Factor | ATX |
| Cooling Method | Air (120mm Fan) |
| Product Dimensions (L x W x H) | 10 x 6 x 4 inches (254 x 152.4 x 101.6 mm) |
| Item Weight | 1.28 ounces (approx. 36.3 grams) |
| Compatible Devices | Personal Computer |
| Connector Types | Floppy, SATA, PCI-E, ATX, EPS/ATX12V, Peripheral |
| Date First Available | June 4, 2010 |
Professional Series AX Specifications Comparison:
| Specification | AX750 | AX850 | AX1200 |
|---|---|---|---|
| Wattage Output | 750 | 850 | 1204 |
| Efficiency | 80+ Gold | 80+ Gold | 80+ Gold |
| Hybrid Silent Fan Control | Yes | Yes | No |
| +12V Rating | 62 Amps | 70 Amps | 100.4 Amps |
| Continuous Power Output | 750 Watts @ 50°C | 850 Watts @ 50°C | 1204 Watts @ 50°C |
| Size (W x H x L) | 150mm x 86mm x 160mm | 150mm x 86mm x 160mm | 150mm x 86mm x 200mm |
8. Warranty and Support
The Corsair Professional Series AX1200 power supply is backed by a comprehensive 7-year limited warranty, ensuring long-term reliability and peace of mind.
In addition to the warranty, Corsair provides lifetime access to its legendary technical support and customer service. If you have any questions, require assistance with installation, or need troubleshooting guidance, please contact Corsair's support team through their official website or contact channels.
9. Product Images
Figure 1: Angled view of the Corsair AX1200 power supply, highlighting its modular cable connections and top fan grill.
Figure 2: Top-down view of the Corsair AX1200 power supply, showcasing the 120mm cooling fan with the Corsair logo.