nVidia is a good buy, but i doubt they would sell. nVidia's stock is at $11 a share and if people were buying more new computers, it would be at $45, if nVidia enters... the CPU market, I think they will hit between $75-100 a share.
AMD is worth way more than their market cap, right now their market cap is depressed because of the tremendous debt. if apple bought AMD, they would probably lay off 2/3rds of the company, retain IP and pay off the debt; which is between $2-$7billion depending on how you count the cards. http://www.fool.com/investing/general/2010/07/26/amd-reshuff...
A better economy might double Nvidia's earning's, so their share price might triple.
Regarding the CPU market, I assume you mean x86 CPU market vs the ARM CPU market they are already a player in. Moving into that market might move their price a little, but increasing it tenfold? When they are entering an established, mature market against a very strong and aggressive player like Intel?
AMD is worth way more than their market cap, right now their market cap is depressed because of the tremendous debt. if apple bought AMD, they would probably lay off 2/3rds of the company, retain IP and pay off the debt; which is between $2-$7billion depending on how you count the cards. http://www.fool.com/investing/general/2010/07/26/amd-reshuff...