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任何人只要留心观察业界都知道,根据摩尔定理,微处理器的速度每18至24个月便要翻一番。但另一方面,存储器的速度却每6年才翻一番。这就是问题的结症所在,而且其发展前景将更加糟糕。因此,从复杂的微处理器设计中榨取最后的每一赫兹,又有什么实际意义呢?现在,让我们考虑一下2.2GHz 奔腾4处理器。这种2.2GHz处理器的速度比1.2GHz Celeron 处理器快80%(使用的电源也超过80%)。实际性能增强了多少?大约增强了20%。它又使价格提
Anyone who is careful to observe the industry knows that, according to Moore’s Law, the speed of microprocessors will double every 18 to 24 months. On the other hand, however, the speed of memory doubles every six years. This is the crux of the problem, and its development prospects will be even worse. So what is the point of squeezing each last Hertz from a complex microprocessor design? Now let’s consider the 2.2GHz Pentium 4 processor. This 2.2GHz processor is 80% faster than a 1.2GHz Celeron processor (using more than 80% power). The actual performance has been enhanced? About 20% increase. It makes the price again