[分享]多方整理的电脑70个小技巧和补充

<p>支持楼主,很需要这方面的知识,要是再找一些那就更好了,</p><p></p>

<p>不错，不错，赞一个~~~</p><p>多多益善了</p>

<p>收下了``</p>

<span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">倍频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">原先并没有倍频概念，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">的主频和系统总线的速度是一样的，但</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">的速度越来越快，倍频技术也就应允而生。它可使系统总线工作在相对较低的频率上，而</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">速度可以通过倍频来无限提升。那么</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">主频的计算方式变为：主频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"> = </span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">外频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"> x </span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">倍频。也就是倍频是指</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">和系统总线之间相差的倍数，当外频不变时，提高倍频，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">主频也就越高。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">缓存（</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">Cache</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">）</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/>CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">进行处理的数据信息多是从内存中调取的，但</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">的运算速度要比内存快得多，为此在此传输过程中放置一存储器，存储</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">经常使用的数据和指令。这样可以提高数据传输速度。可分一级缓存和二级缓存。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">一级缓存</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">即</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">L1 Cache</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">。集成在</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">内部中，用于</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">在处理数据过程中数据的暂时保存。由于缓存指令和数据与</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">同频工作，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">L1</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">级高速缓存缓存的容量越大，存储信息越多，可减少</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">与内存之间的数据交换次数，提高</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">的运算效率。但因高速缓冲存储器均由静态</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">RAM</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">组成，结构较复杂，在有限的</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">芯片面积上，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">L1</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">级高速缓存的容量不可能做得太大。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">
                <br style=\"mso-special-character: line-break;\"/><br style=\"mso-special-character: line-break;\"/></span>

<span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">主频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/>CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">内部的时钟频率，是</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">进行运算时的工作频率。一般来说，主频越高，一个时钟周期里完成的指令数也越多，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">的运算速度也就越快。但由于内部结构不同，并非所有时钟频率相同的</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">性能一样。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">外频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">即系统总线，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">与周边设备传输数据的频率，具体是指</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">到芯片组之间的总线速度。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br style=\"mso-special-character: line-break;\"/><br style=\"mso-special-character: line-break;\"/></span>

<span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">主频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/>CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">内部的时钟频率，是</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">进行运算时的工作频率。一般来说，主频越高，一个时钟周期里完成的指令数也越多，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">的运算速度也就越快。但由于内部结构不同，并非所有时钟频率相同的</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">性能一样。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">外频</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br/><br/></span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">即系统总线，</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">与周边设备传输数据的频率，具体是指</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\">到芯片组之间的总线速度。</span><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'Times New Roman\'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;\"><br style=\"mso-special-character: line-break;\"/><br style=\"mso-special-character: line-break;\"/></span>

<div class=\"f14 wr\">CPU的主频，即CPU内核工作的时钟频率（CPU Clock Speed）。通常所说的某某CPU是多少兆赫的，而这个多少兆赫就是“CPU的主频”。很多人认为CPU的主频就是其运行速度，其实不然。CPU的主频表示在CPU内数字脉冲信号震荡的速度，与CPU实际的运算能力并没有直接关系。主频和实际的运算速度存在一定的关系，但目前还没有一个确定的公式能够定量两者的数值关系，因为CPU的运算速度还要看CPU的流水线的各方面的性能指标（缓存、指令集，CPU的位数等等）。由于主频并不直接代表运算速度，所以在一定情况下，很可能会出现主频较高的CPU实际运算速度较低的现象。比如AMD公司的AthlonXP系列CPU大多都能已较低的主频，达到英特尔公司的Pentium 4系列CPU较高主频的CPU性能，所以AthlonXP系列CPU才以PR值的方式来命名。因此主频仅是CPU性能表现的一个方面，而不代表CPU的整体性能。 <br/><br/>CPU的主频不代表CPU的速度，但提高主频对于提高CPU运算速度却是至关重要的。举个例子来说，假设某个CPU在一个时钟周期内执行一条运算指令，那么当CPU运行在100MHz主频时，将比它运行在50MHz主频时速度快一倍。因为100MHz的时钟周期比50MHz的时钟周期占用时间减少了一半，也就是工作在100MHz主频的CPU执行一条运算指令所需时间仅为10ns比工作在50MHz主频时的20ns缩短了一半，自然运算速度也就快了一倍。只不过电脑的整体运行速度不仅取决于CPU运算速度，还与其它各分系统的运行情况有关，只有在提高主频的同时，各分系统运行速度和各分系统之间的数据传输速度都能得到提高后，电脑整体的运行速度才能真正得到提高。 <br/><br/>提高CPU工作主频主要受到生产工艺的限制。由于CPU是在半导体硅片上制造的，在硅片上的元件之间需要导线进行联接，由于在高频状态下要求导线越细越短越好，这样才能减小导线分布电容等杂散干扰以保证CPU运算正确。因此制造工艺的限制，是CPU主频发展的最大障碍之一。</div><div class=\"f14 wr\">=============================</div><div class=\"f14 wr\">楼上一直在强调主频和外频是不是想说“<font size=\"2\">主频越高，一个时钟周期里完成的指令数也越多，</font><span lang=\"EN-US\" style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: \'times new roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;\">CPU</span><span style=\"FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: \'times new roman\'; mso-hansi-font-family: \'times new roman\'; mso-bidi-font-family: \'times new roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;\">的运算速度也就越快”这话是片面的？</span></div>

<div class=\"f14 wr\">外频是CPU乃至整个计算机系统的基准频率，单位是MHz（兆赫兹）。在早期的电脑中，内存与主板之间的同步运行的速度等于外频，在这种方式下，可以理解为CPU外频直接与内存相连通，实现两者间的同步运行状态。对于目前的计算机系统来说，两者完全可以不相同，但是外频的意义仍然存在，计算机系统中大多数的频率都是在外频的基础上，乘以一定的倍数来实现，这个倍数可以是大于1的，也可以是小于1的。 <br/><br/>说到处理器外频，就要提到与之密切相关的两个概念：倍频与主频，主频就是CPU的时钟频率；倍频即主频与外频之比的倍数。主频、外频、倍频，其关系式：主频＝外频×倍频。 <br/><br/>在486之前，CPU的主频还处于一个较低的阶段，CPU的主频一般都等于外频。而在486出现以后，由于CPU工作频率不断提高，而PC机的一些其他设备（如插卡、硬盘等）却受到工艺的限制，不能承受更高的频率，因此限制了CPU频率的进一步提高。因此出现了倍频技术，该技术能够使CPU内部工作频率变为外部频率的倍数，从而通过提升倍频而达到提升主频的目的。倍频技术就是使外部设备可以工作在一个较低外频上，而CPU主频是外频的倍数。 <br/><br/>在Pentium时代，CPU的外频一般是60/66MHz，从Pentium Ⅱ 350开始，CPU外频提高到100MHz，目前CPU外频已经达到了200MHz。由于正常情况下外频和内存总线频率相同，所以当CPU外频提高后，与内存之间的交换速度也相应得到了提高，对提高电脑整体运行速度影响较大。 <br/><br/>外频与前端总线（FSB）频率很容易被混为一谈。前端总线的速度指的是CPU和北桥芯片间总线的速度，更实质性的表示了CPU和外界数据传输的速度。而外频的概念是建立在数字脉冲信号震荡速度基础之上的，也就是说，100MHz外频特指数字脉冲信号在每秒钟震荡一万万次，它更多的影响了PIC及其他总线的频率。之所以前端总线与外频这两个概念容易混淆，主要的原因是在以前的很长一段时间里（主要是在Pentium 4出现之前和刚出现Pentium 4时），前端总线频率与外频是相同的，因此往往直接称前端总线为外频，最终造成这样的误会。随着计算机技术的发展，人们发现前端总线频率需要高于外频，因此采用了QDR（Quad Date Rate）技术，或者其他类似的技术实现这个目的。这些技术的原理类似于AGP的2X或者4X，它们使得前端总线的频率成为外频的2倍、4倍甚至更高，从此之后前端总线和外频的区别才开始被人们重视起来。</div>

自从论坛改版之后，我就已经心灰意冷，对论坛也没抱什么希望了，传说已经幻灭，神话已经终结，留在论坛还有什么意思。没想到，没想到，今天可以再睹楼主的风范，我激动得忍不住就在屏幕前流下了眼泪。是啊，只要在楼主的带领下，论坛就有希望了。我的内心再一次沸腾了，我胸腔里的血再一次燃烧了。楼主的几句话虽然简单，却概括扼要，一语道出了我们苦想多年的而不可得答案的几个重大问题的根本

<p>支持  </p><p>顶~~~]</p><p> </p>[em01]