Which is entirely irrelevant. Their share price was based on investors predictioning what Nvidia would be worth in 5+ years time, and the growth was predicated on a massive increase in autonomous cars and such like. Nvidia share to profit ratio was sky high, now it is just extremely high. Investors still love Nvidia and have high faith, but the market has corrected some of the speculative lunacy which is occuring across the tech industry. Nvidiia begin a tech darling at the forefront of many future technologies such as Autonomous driving is more exposed to such fluctuations. AMD's failure to enetrate such marets has limited their share value growth, along with the continued financial issues, is why AMD shares fell much less.
Ignoring anti-monopoly rules, Nvidia could just buy AMD outright, could right a cheque right now and AMD is gone.