To check GPU temperature, there are several methods available depending on your system and preferences:

Using Windows Task Manager

• Press Ctrl + Shift + Esc to open Task Manager.
• Navigate to the Performance tab.
• Select GPU on the left sidebar.
• The current GPU temperature will be displayed there.
  This is a built-in option and the easiest for Windows users.

Using GPU Manufacturer Software

• For Nvidia GPUs, use the GeForce Experience software:
  • Open it, enable In-Game Overlay in settings, and configure HUD to show performance metrics including temperature.
• For AMD GPUs, use the AMD Radeon Software:
  • Open the software, go to the Performance tab to see GPU temperature and enable in-game overlay for real-time monitoring.
    These provide detailed monitoring and real-time overlay options.

Using Third-Party Tools

• HWinfo: Offers detailed sensor data including GPU temperature.
• GPU-Z: Simple tool specialized for GPU monitoring.
• MSI Afterburner: Popular for both monitoring and fan control.
• Open Hardware Monitor, Speedfan, and Speccy are other alternatives.
  These tools give more in-depth information and customization.

For Nvidia Users (Command line)

• Use the command line tool nvidia-smi:

  nvidia-smi --query-gpu=gpu_name,temperature.gpu --format=csv
  

• Provides GPU temperature info in Windows or Linux terminals.

In summary, the easiest and quickest for most people on Windows is Task Manager, but for detailed monitoring, GPU-specific software or third-party tools can be used. For Nvidia users on command line, nvidia-smi is a great option.

If more detailed instructions or specific tool recommendations are needed, please ask.