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CPUs of the future: AMD partners with ARM, Intel designs a brain on a chip

MrSeb (471333) writes | more than 2 years ago


MrSeb writes "In the past week, both AMD and Intel have given us a tantalizing peek at their next-generation neuromorphic (brain-like) computer chips. These chips, it is hoped, will provide brain-like performance (i.e. processing power and massive parallelism way beyond current CPUs) while consuming minimal amounts of power. First, AMD last week announced that its future APUs will feature ARM Cortex cores, first to implement TrustZone (ARM Holdings' hardware DRM/security chip), but then eventually as part of a proper x86-ARM-GPU heterogeneous system architecture (HSA). It isn’t too crazy to think that a future AMD (or Texas Instruments) chip might have a few GPU cores, a few x86 CPU cores, and thousands of tiny ARM cores, all working in perfect, parallel, neuromorphic harmony — as long as the software toolchain is good enough that you don’t have to be some kind of autist to use all of those resources efficiently. Intel, on the other hand, today unveiled a neuromorphic chip design based on multi-input lateral spin valves (LSV) and memristors. LSVs are microscopic magnets that change their magnetism to match the spin of electrons being passed through them (spintronics). Memristors are electronic components that increase their resistance as electricity passes through them one way, and reduce their resistance when electricity flows in the opposite direction — and when no power flows, the memristor remembers its last resistance value (meaning it can store data). Unlike state-of-the-art CMOS transistors that require volts to switch on and off, the LSV neurons only require a handful of electrons to change their orientation, which equates to 20 millivolts. For some applications, Intel thinks its neuromorphic chip could be up to 300 times more energy efficient than the CMOS equivalent."
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