How to overclock Nvidia 660 GPU Windows 10

If you’re looking to squeeze out some extra performance from your Nvidia GTX 660 graphics card, overclocking can be a viable option. Overclocking allows you to increase the clock speeds of your GPU beyond its factory settings, potentially enhancing gaming performance and graphics rendering capabilities. Here’s a comprehensive guide on how to overclock your Nvidia GTX 660 GPU safely on a Windows 10 system.

Understanding GPU Overclocking

Before diving into the overclocking process, it’s crucial to understand a few key concepts:

  • GPU Clock Speeds: GPUs operate at specific clock speeds, which determine how fast they can process data and render graphics.
  • Voltage: Increasing clock speeds often requires adjusting the voltage to maintain stability.
  • Cooling: Overclocking generates more heat, so adequate cooling is essential to prevent overheating and potential damage.

Step-by-Step Guide to Overclocking Nvidia GTX 660 on Windows 10

Follow these steps to safely overclock your Nvidia GTX 660 GPU:

Step 1: Update Graphics Drivers

Ensure your Nvidia graphics drivers are up to date. Visit the Nvidia website or use the GeForce Experience app to download and install the latest drivers for your GTX 660 GPU.

Step 2: Download Overclocking Software

There are several overclocking utilities available, but MSI Afterburner is widely recommended and user-friendly. Download and install MSI Afterburner from the MSI website or other trusted sources.

Step 3: Open MSI Afterburner

Launch MSI Afterburner. You’ll see sliders for core clock, memory clock, voltage, and fan speed.

Step 4: Increase Core Clock Speed

  • Core Clock: Start by increasing the core clock speed gradually. Move the slider slightly to the right (+10 MHz, for example), then click “Apply” and test stability. Repeat this process until you notice artifacts or instability in games or benchmarks.
  • Voltage: If increasing the core clock causes instability, you may need to increase the voltage slightly. Use caution and incrementally adjust voltage as needed to maintain stability. Keep an eye on temperatures and ensure they remain within safe limits.

Step 5: Test Stability

After each adjustment, stress test your GPU using benchmarks like Unigine Heaven or 3DMark. Monitor temperatures and watch for artifacts (visual anomalies) that indicate instability. If artifacts appear or your system crashes, dial back the clock speeds or voltage until stable.

Step 6: Memory Clock and Final Adjustments

Once you’ve found a stable core clock speed, you can adjust the memory clock in a similar manner. Increase the memory clock in small increments, test for stability, and adjust voltage if necessary.

Step 7: Monitor Temperatures

Throughout the overclocking process, keep an eye on GPU temperatures using MSI Afterburner or other monitoring tools. Ensure temperatures stay within safe limits (typically below 85°C under load).

Step 8: Save Settings

Once you’ve achieved stable overclocks, save your settings in MSI Afterburner by clicking the floppy disk icon (“Save”) next to the profile settings. This allows you to load your overclocked settings automatically when Windows starts.

Step 9: Benchmark and Enjoy

After completing overclocking adjustments, benchmark your GPU performance in games or benchmarks to see the performance gains achieved. Enjoy the enhanced gaming experience with your overclocked Nvidia GTX 660 GPU!

Safety Tips for Overclocking

  • Start Slow: Incrementally increase clock speeds and voltage to find stable settings.
  • Monitor Temperatures: Ensure adequate cooling to prevent overheating.
  • Backup Settings: Save stable profiles in overclocking software.
  • Know Your Limits: Avoid pushing clock speeds beyond safe limits to prevent damage.


Overclocking your Nvidia GTX 660 GPU on Windows 10 can breathe new life into your gaming experience by boosting performance. With the right tools, methodical approach, and attention to safety precautions, you can safely unlock the potential of your GPU and enjoy smoother gameplay and improved graphics performance. Happy overclocking!

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