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Intel Says Chips To Become Slower But More Energy Efficient (thestack.com)
An anonymous reader writes: William Holt, Executive Vice President and General Manager of Intel's Technology and Manufacturing Group, has said at a conference that chips will become slower after industry re-tools for new technologies such as spintronics and tunneling transistors. "The best pure technology improvements we can make will bring improvements in power consumption but will reduce speed." If true, it's not just the end of Moore's Law, but a rolling back of the progress it made over the last fifty years.
Moore's law says nothing about power or speed. It's strictly about the number of transistors on a chip.
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Except they have, in terms of work done per clock (even ignoring multicore). A Haswell 1.2 ghz can achieve the same sort of results as a 3.0 ghz AMD core from 5 years ago in a balanced set of CPU constrained work. It actually comes out ahead in a number of specific workloads. Note I'm comparing to a core significantly older, with less cache for the sake of demonstrating only the senselessness of being fixated on clock, not saying this is a fair Intel v. AMD comparison.
On the other hand, a 1.2 GHz AMD K7 back in the day could beat a 3.0 GHz Pentium 4 of the same time. There's a lot more to processor performance than clockspeed.
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It's actually called speculative execution, and we already do it. For many tasks it's a significant performance increase.
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