[Nexus 7 (2013) Q&A] Buratei:
Just to answer myself: this is what Chat GPT had to say, and it does seem to work for changing GPUclock. Don't quite remember the exact file path, you can look it up with a root explorer or similar apps with system partition viewing capability (I use X-plorer).

Yes, you can attempt to control the GPU frequency on your Nexus 7 2013 or other Android devices in a similar manner to how CPU frequencies are managed. However, be aware that the specific paths and files for GPU frequency control can vary significantly between devices and manufacturers due to different GPUs and driver implementations. Qualcomm, for example, has its own set of paths and files for its Adreno GPUs.

Here's a general approach to try and modify GPU frequencies on your device. Note that this requires root access, and the exact file paths might be different based on the device and the Android version you're using. This process might not work on all devices due to these variations or due to restrictions placed by the manufacturer.

1. **Connect to your device using ADB and gain root access:**

```

adb root

adb shell

```

2. **Find the GPU frequency control files:**

For many devices, GPU frequency-related files are located in directories such as `/sys/class/kgsl/kgsl-3d0/` or `/sys/class/devfreq/`. You would need to look for files like `min_freq`, `max_freq`, and possibly a file to set the governor.

To find the relevant directory, you can use the `find` or `ls` command:

```

ls /sys/class/kgsl/kgsl-3d0/

```

or

```

find /sys -name kgsl-3d0

```

3. **Check available frequencies and the current governor:**

- To see available frequencies, look at the contents of the `gpu_available_frequencies` file if it exists:

```

cat /sys/class/kgsl/kgsl-3d0/gpu_available_frequencies

```

- To check the current governor, you can:

```

cat /sys/class/kgsl/kgsl-3d0/pwrscale/trustzone/governor

```

4. **Set the GPU governor (if necessary and possible):**

Changing the governor to `performance` may keep the GPU at its maximum frequency. However, setting it to a constant frequency is not always straightforward and might not be supported:

```

echo performance > /sys/class/kgsl/kgsl-3d0/pwrscale/trustzone/governor

```

5. **Set the minimum and maximum GPU frequencies:**

Assuming you've found the correct path and files, and identified the frequency you want to set, you can do something like this:

```

echo [MIN_FREQUENCY] > /sys/class/kgsl/kgsl-3d0/min_freq

echo [MAX_FREQUENCY] > /sys/class/kgsl/kgsl-3d0/max_freq

```

Replace `[MIN_FREQUENCY]` and `[MAX_FREQUENCY]` with the frequencies in Hz that you've determined are supported by your device.

Remember, these changes are temporary and will revert back to their default settings once you reboot your device. To make these changes persist across reboots, you'd need to create or modify an init script or use a tasker app that requires root access to apply these settings at boot.

Be cautious when modifying these settings, as setting the GPU to operate at its maximum frequency can lead to increased power consumption and heat generation, which might negatively affect your device's performance and lifespan.