architecture - Can a single processor have varying frequencies for each core? -


i reading blog post company sells bitcoin mining hardware. specialty use of asic achieve highest possible (energy) efficiency. have few questions not related bitcoin mining. please answer!

  1. is possible/practical make processor consisting of several cores, each core has different frequency (or generally, different manufacturing processes 20nm, 14 nm etc, or different performance features)?

  2. can different cores of cisc, risc & asic grouped inside single processor?

1. first of related first question: difficult produce processors produced different production processes. processors (and chips in general) 'printed' on wafers, many processors on same wafer. not fabricated in parts , put afterwards. in general 1 manufacturing process used per processor.

edit: "i have add however, processor consists of many layers (20 or more), layers can more critical others (detail more important), layers production process can used. still applied whole die (printed processor), cores. 1 processor can produced using 14nm critical layers , 22nm less critical layers, cores of processor went same production process"

frequency not directly related manufacturing process answer question seperately. possible use 1 multicore processor consisting of different cores different clock speeds. happening in mobile phone industry, energy important. different cores can clocked @ different speeds (big little concept)

2. yes, refer again big little concept. processor consist of example 5 cores, 1 energy efficient, , 4 cores can turned on , off (or run @ lower speed). in general, smaller core has different architecture other 4 cores.


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