Corsair RMx Series - 750W - ATX3.1 - PCIe5.1 - CP-9020285-UK

The CORSAIR RMx Series RM750x power supply delivers reliable performance with 750 watts of efficie...

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eBayCorsair RM750x power supply unit 750W 24-pin ATX ATX Modular 50 Series Ready
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Product Information

Full details

For PC builders and upgraders seeking stable, efficient power, the Corsair RM750x Power Supply delivers reliable performance with 750 watts of Cybenetics Gold certified efficiency. Its fully modular design simplifies cable management, and ATX3.1/PCIe5.1 compatibility ensures seamless integration with modern, high-performance systems. While installation is straightforward, proper planning for cable routing is always beneficial for optimal airflow.

All features

Model Part NumberCP-9020285-UK
BrandCorsair

Extended Product Information

FAQs

What does 'Cybenetics Gold' certification mean?

Cybenetics Gold certification indicates that the power supply meets a high standard of energy efficiency, typically operating at 87-90% efficiency at various load levels. This means less power is wasted as heat and more is delivered to your components, resulting in lower electricity consumption.

Are all cables included with the RM750x fully modular?

Yes, the Corsair RM750x is a fully modular power supply. This means you only connect the specific cables required for your system's components, leading to cleaner builds and improved airflow.

Is the RM750x compatible with ATX 3.0 and PCIe 5.0 graphics cards?

Yes, the RM750x is compatible with ATX 3.1 and PCIe 5.1, making it fully ready for the latest hardware, including graphics cards that use the 12VHPWR connector (often referred to as 'PCIe 5.0' power connectors).

How do I know if 750W is enough for my PC?

To determine if 750W is sufficient, you should calculate the total power draw of your system's components (CPU, GPU, motherboard, drives, fans, etc.). Online PSU calculators can assist with this. For most single high-end GPU setups and modern CPUs, 750W is ample, but very powerful dual-GPU or extreme overclocking configurations might require more.

Can I use custom braided cables with this PSU?

Yes, you can typically use custom braided cables. However, it is crucial to use cables specifically designed for Corsair Type 4 power supplies to ensure pinout compatibility and prevent damage to your components. Using cables from other brands or types can be dangerous.

Does this power supply operate silently?

The Corsair RM750x is designed for quiet operation, especially under low to medium loads. It features an optimized fan curve and high-quality components that allow the fan to remain off or spin at very low RPMs for much of the time, contributing to a near-silent computing experience.

Troubleshooting

PC will not power on after PSU installation.
  1. Ensure the power cable is securely plugged into both the PSU and the wall outlet. 2. Verify the power switch on the back of the PSU is set to the 'I' (on) position. 3. Check all modular cables (24-pin ATX, CPU, GPU) are firmly seated in both the PSU and the components. 4. Confirm the front panel power switch header is correctly connected to the motherboard.
System experiences random shutdowns or reboots.

This can indicate an overloaded PSU or overheating. 1. Check your system's total power draw against the PSU's 750W capacity. 2. Monitor component temperatures (CPU, GPU) to rule out overheating. 3. Ensure the PSU fan is spinning freely and not obstructed by dust or cables. 4. If issues persist, test the PSU with a known working, less demanding configuration or a PSU tester.

Unusual fan noise from the PSU.
  1. Turn off your PC and unplug the PSU. Gently clear any dust or debris from the fan blades and intake/exhaust vents using compressed air. 2. Ensure no cables are touching the fan. 3. If the noise is a constant grinding or rattling, it might indicate a failing fan bearing; contact support if under warranty.
Graphics card not detected or no display output.
  1. Ensure all PCIe power cables are correctly and fully plugged into both the graphics card and the modular ports on the PSU. 2. If using a 12VHPWR connector, ensure it's fully seated and not bent or twisted. 3. Try connecting the display cable (HDMI/DisplayPort) to a different port on the graphics card or your motherboard (if your CPU has integrated graphics) to rule out display issues.

Pros and Cons

Pros

  • High energy efficiency (Cybenetics Gold) reduces operating costs and heat.
  • Fully modular design greatly simplifies PC building and cable management.
  • Future-proof with ATX3.1 and PCIe5.1 standards for next-gen hardware.
  • Quiet operation contributes to a more pleasant computing environment.
  • Reliable and stable power delivery for critical components.
  • Premium components ensure long-term durability and performance.

Cons

  • 750W may be a limiting factor for extreme high-end builds with multiple power-hungry GPUs.
  • Initial cost might be higher compared to non-modular or lower-efficiency PSUs.
  • Standard ATX form factor might be challenging in very compact SFF (Small Form Factor) cases.

Setup, Compatibility & Care

Setup Instructions

  1. Preparation: Ensure your PC is powered off and unplugged from the wall. Discharge any residual power by holding the power button for a few seconds.
  2. Mounting: Install the RM750x into your PC case's power supply bay, usually at the bottom or top rear. Secure it with the provided screws.
  3. Motherboard Power: Connect the 24-pin ATX power cable to your motherboard. This is typically the widest connector.
  4. CPU Power: Connect the 8-pin (or 4+4 pin) EPS/CPU power cable(s) to the appropriate header(s) on your motherboard.
  5. Graphics Card Power: Connect the necessary PCIe power cables to your graphics card. For modern GPUs requiring 12VHPWR, use the dedicated cable. Otherwise, use 6+2 pin PCIe cables as needed.
  6. SATA/Peripheral Power: Connect SATA power cables to your storage drives (SSDs/HDDs) and any other peripherals requiring SATA power (e.g., fan hubs, RGB controllers).
  7. Cable Management: Route cables cleanly behind the motherboard tray or in other designated channels to improve airflow and aesthetics.
  8. Final Checks: Double-check all connections to ensure they are secure. Plug in the AC power cord to the PSU and then to a wall outlet.

Compatibility

  • Form Factor: Standard ATX power supply, compatible with most ATX, Micro-ATX, and E-ATX cases.
  • Motherboard: Compatible with ATX 2.x, ATX 3.0, and ATX 3.1 motherboards.
  • Graphics Cards: Fully compatible with PCIe 5.1 graphics cards (including 12VHPWR) and older PCIe generations.

Care & Maintenance

  • Dust Cleaning: Periodically (e.g., every 3-6 months), use compressed air to gently clean dust from the PSU fan intake and exhaust vents. Ensure the PC is off and unplugged.
  • Environment: Operate the PSU in a well-ventilated area and within its specified temperature range to ensure optimal performance and longevity.
  • Avoid Overloading: Ensure your total system power draw does not consistently exceed the PSU's rated wattage to prevent strain and premature wear.

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