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As I understand the truth is that:
-the chinese government have their own mips based cpu (only used by gov/schools as the rest of china uses x86). It's long term future is debatable at best.
-they wanted the option to use nvidia gpu's with these (quite how many gov/school machines need gaming graphics is again debatable).
-to do this nvidia needs a mips port of their drivers, which is a big thing. Two ways of doing this:
a) nvidia release source/driver details and gpu details to let chinese make their own drivers. Nvidia not to keen on this as they won't release this sort of info to anyone let alone the country that are masters of the cheap knockoff.
b) nvidia write the drivers, nvidia offered to do this for lots of money. Chinese said no we refuse to spend the money. Nvidia then declined the contract.
The truth of this is there wouldn't be much money in this, it would be a lot of work, and the platform is probably going to die a death anyway.
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This is old news. The contract is more of a test run that may never reach as high as the above figures claim. If you want to read more about it, do a quick google search.