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.
Erasing Data: To reset a cell, a high voltage of opposite polarity tunnels the electrons back out of the floating gate, returning it to the erased state (usually all ‘1’s). Erases happen in large blocks (4-16 MB) because cells are wired in series strings.。业内人士推荐体育直播作为进阶阅读
Россия нарастила до максимума вывоз одного лакомства08:43。关于这个话题，快连下载安装提供了深入分析
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