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In 2011 AMD released the Bulldozer architecture, with a somewhat untraditional implementation of the "multicore" technology. Now, 4 years later, they are sued for false advertising, fraud and other "criminal activities". From TFA:
In claiming that its new Bulldozer CPU had "8-cores," which means it can perform eight calculations simultaneously, AMD allegedly tricked consumers into buying its Bulldozer processors by overstating the number of cores contained in the chips. Dickey alleges the Bulldozer chips functionally have only four cores—not eight, as advertised.
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AMD Sued by Customer Over Misrepresentation of "Multicore"
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(Score: 1, Informative) by Anonymous Coward on Saturday November 07 2015, @03:56AM
I don't even have to RTFA to tell you what he's complaining about.
To put it simply, the bulldozer arch has 1 floating point unit for every 2 integer units. So an 8 core chip can run 8 integer threads simultaneously, but can only do 4 floating point threads simultaneously. If a thread mixes a lot of int and float work, then under pathological conditions scheduling will make it behave like a 4 core system.
(Score: 3, Funny) by maxwell demon on Saturday November 07 2015, @08:49AM
I guess then the original 8086 was a zero-core processor because it didn't have a floating point unit at all. You could buy an external one, the 8087.
The Tao of math: The numbers you can count are not the real numbers.