My alienware's cpu throttles to 0.8 GHZ when at 75 degrees. this doesnt seem like a thermal throttle but a power throttle. how can i get a 240 watt psu like they talk about in this article:  https://www.dell.com/support/article/us/en/19/sln295814/low-video-performance-on-alienware-15-and-17-r2?lang=en#toc1

And my model is 17 r2 and the gpu is hitting between 50 and 70