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Since CPUs require the Cores and Threads to be multiplied by 2, or 1, e.g "12 core 24 threads", Then we might have the possibility, of having 333 cores, 666 threads, or just 666 cores, and 666 threads, and 333 cores, 333 threads, idea gotten from AMD's massive CPUs

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There's no requirement to have 2 threads per core, there are processors with 4 threads per core and even higher numbers. 

 

Intel Xeon Phi, IBM POWER7 and some versions of POWER9, UltraSPARC T1 and T2 have 4 threads per core. 

IBM POWER8 and most versions of POWER9 have 8 threads, as does any Oracle SPARC chip after T2, along with XMOS embedded processors.

 

There are rumors the next Zen generation will have 4 threads per core, but that may be "enabled" only on server processors 

 

Typically multiples of 2 are preferred because it's easy to do binary math (divide by 2, shift bits etc) and because almost everything in a computer is using things that are multiple of 2. 

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9 minutes ago, mariushm said:

There's no requirement to have 2 threads per core, there are processors with 4 threads per core and even higher numbers. 

 

Intel Xeon Phi, IBM POWER7 and some versions of POWER9, UltraSPARC T1 and T2 have 4 threads per core. 

IBM POWER8 and most versions of POWER9 have 8 threads, as does any Oracle SPARC chip after T2, along with XMOS embedded processors.

 

There are rumors the next Zen generation will have 4 threads per core, but that may be "enabled" only on server processors 

 

Typically multiples of 2 are preferred because it's easy to do binary math (divide by 2, shift bits etc) and because almost everything in a computer is using things that are multiple of 2. 

Imagine 333 Core 2 Duos in one CPU

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