{
  services.thermald.enable = false;

  services.tlp = {
    enable = true;
    settings =
      # In services.tlp.settings
      {
        # --- CPU Settings for Core Ultra 9 185H ---

        # Use the modern 'intel_pstate' driver in active mode. This is correct.
        CPU_DRIVER_OPMODE_ON_AC = "active";
        CPU_DRIVER_OPMODE_ON_BAT = "active";

        # CRITICAL: Use 'powersave' for both. On modern Intel chips, this enables
        # dynamic scaling from idle up to max boost. It is the best-performing
        # and most efficient setting.
        CPU_SCALING_GOVERNOR_ON_AC = "powersave";
        CPU_SCALING_GOVERNOR_ON_BAT = "powersave";

        # This is your main performance tuning knob. 'performance' tells the CPU
        # to aggressively ramp up to high clock speeds when it detects a load.
        # 'balance_performance' provides good performance while being more thermal-aware.
        CPU_ENERGY_PERF_POLICY_ON_AC = "balance_performance";
        CPU_ENERGY_PERF_POLICY_ON_BAT = "balance_power";

        # Allow the CPU to use its performance range when plugged in, but cap it
        # slightly to reduce heat generation while maintaining good responsiveness.
        CPU_MIN_PERF_ON_AC = 0;
        CPU_MAX_PERF_ON_AC = 85; # Reduced from 100% to help with thermal management
        CPU_MIN_PERF_ON_BAT = 0;
        CPU_MAX_PERF_ON_BAT = 60; # Slightly higher than before for better battery responsiveness.

        # ESSENTIAL: Enable Turbo Boost on AC. This is how you get peak performance.
        # The 'powersave' governor will use boost intelligently when needed.
        # Disabling on battery is key for thermal control and battery life.
        CPU_BOOST_ON_AC = 1;
        CPU_BOOST_ON_BAT = 0;

        # HWP Dynamic Boost is a good feature to keep enabled.
        CPU_HWP_DYN_BOOST_ON_AC = 1;
        CPU_HWP_DYN_BOOST_ON_BAT = 1;

        # --- Intel Arc GPU & System Settings ---

        # Set the platform profile. 'low-power' is more conservative than 'balanced'
        # to help with thermal management while still providing reasonable performance.
        PLATFORM_PROFILE_ON_AC = "low-power";
        PLATFORM_PROFILE_ON_BAT = "low-power";

        # Use 'powersupersave' for PCIe ASPM. This allows the components,
        # including the GPU, to enter deeper sleep states, reducing idle heat.
        PCIE_ASPM_ON_AC = "powersupersave";
        PCIE_ASPM_ON_BAT = "powersupersave";

        # Runtime Power Management is crucial for the integrated GPU to power down
        # when not in heavy use. 'auto' is the recommended setting for modern hardware.
        RUNTIME_PM_ON_AC = "auto";
        RUNTIME_PM_ON_BAT = "auto";
        # Whitelist everything except devices known to cause issues (like some audio codecs).
        # The default blacklist is usually sufficient.
        RUNTIME_PM_DRIVER_BLACKLIST = "amdgpu nouveau nvidia pcieport";

        # --- Other Power Saving ---

        # Keep Wi-Fi power saving on; it's generally fine.
        WIFI_PWR_ON_AC = "on";
        WIFI_PWR_ON_BAT = "on";

        # Sound power saving is fine.
        SOUND_POWER_SAVE_ON_AC = 1;
        SOUND_POWER_SAVE_ON_BAT = 1;
        SOUND_POWER_SAVE_CONTROLLER = "Y";

        # USB autosuspend is fine.
        USB_AUTOSUSPEND = 1;
      };
  };

  #powerManagement.powertop.enable = true;

  services.power-profiles-daemon.enable = false;
}