Flashing BIOS of a higher-end GPU onto a less powerful SKU from the same GPU family is not a novel concept. However, it can enable massive performance uplift thanks to the more relaxed approach to power and frequency. This is exactly what u/noVa_realiZe did and posted on r/Radeon subreddit. Accordin...
And to be clear, “bad idea” means your graphics card is likely to die early. Components pushed hard for long tend to fail, and these things are generally pushed hard even at stock settings.