GPU showing wrong max wattage on Linux

[HARDWELL9191]

So I have the Sapphire 7900XTX Nitro + which I know for a fact the TDP is like 400W, but as you can see from the LACT software it gets detected as a max of 339W by default and increasable up to 350W. I'm not sure what's going on here, even MangoHud is showing incorrect power usage which hovers around 300W when previously on Windows it was always around 400W. Is there any way to get my system to recognize the correct power usage of the GPU?

 

OS: Fedora 40

CPU: 7800X3D

GPU: 7900XTX

RAM: 32 GB DDR5 6000MHz

SSD: 1TB WD Black SN850X


SOLVED: For some reson I had to enable overclocking and needed to increase the Power draw to 400W, because it isn't by default. I'm not sure why it's limited by default, but it works now.

[HARDWELL9191]

SOLVED

[xAcid9]

Iirc, LACT only show total gpu/die power, not total board power.