https://wccftech.com/nvidia-geforce-rtx-3090-ti-custom-xoc-bios-pushes-power-limit-to-almost-1000w/

NVIDIA's GeForce RTX 3090 Ti is currently the most power-hungry graphics card with a rated TDP of 450W but overclockers have managed to push it far beyond this limit.

Twitter user, MEGAsizeGPU, managed to unlock a higher power limit thanks to the XOC (Extreme Overclock) BIOS which he got his hands on. The BIOS was flashed onto an ASUS GeForce RTX 3090 Ti TUF Gaming graphics card which ships with a rated TDP of 450W which is the reference limit but once flashed, the GPU's power limit jumped to 890W which is almost double its original power limit and super close to the 1KW barrier.