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386 performance vs 486It also helped that a fast 386 could keep pace with the slowest 486s. The 40 MHz version of the Am386 enjoyed an especially long shelf life as a value CPU. The 486 was more efficient than the 386 but it wasn’t twice as efficient, so a 40 MHz 386 was faster than a 20 MHz Intel 486SX, and roughly comparable to a 25 MHz 486SX. It also held the additional advantage of taking an external math coprocessor. Part of the point of the 486 was the integrated math coprocessor improved performance, but an external math coprocessor was faster than none. So while a 40 MHz 386 plus a 40 MHz 387 wasn’t as fast as a full 486DX at 25 MHz, depending on whose FPU you used, you could get 75-90 percent of the performance at less than 75 percent of the price.
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大国经济的特征是内需为主导、内部可循环。我国拥有14亿多人口、规模庞大的中等收入群体，人均国内生产总值连续3年超过1.3万美元，位居中等偏上收入国家前列。这不仅铸就了我国超大规模市场的优势，也使我国成为全球最有潜力的消费市场。近年来，民营经济促进法出台、全国统一大市场建设等，进一步释放了经营主体活力、提升了资源配置效率，让我国超大规模市场优势更加彰显，使我国有坚实底气从市场和资源“两头在外”的发展格局，转向以需求牵引供给、以供给创造需求的增长方式。
The full iterative implementation #