I have an Alienware 16X Aurora AC16251 with an RTX 5070 Laptop GPU.

Under Windows, when using Performance Mode in Alienware Command Center, the GPU power consumption reaches approximately 95W under load.

However, when booting into Ubuntu 24.04 (dual boot setup), the GPU power limit appears capped at 50W under identical load conditions.

In Ubuntu, nvidia-smi reports:

• Maximum power limit: 115W

• Default/current power limit: 50W

• Attempts to change the limit are not supported

This suggests the GPU is capable of a higher power level, but it is being restricted outside of Windows.

I would like to understand:

1. Is this behavior expected by design?

2. Is the higher GPU TGP dependent on Windows software (Alienware Command Center)?

3. Is there a BIOS or firmware setting that enables the full advertised GPU TGP independent of operating system?

I am not requesting Linux support specifically — I am trying to understand whether the GPU power configuration is OS-dependent by design.