評價(jia)內存條的性能指標一共(gong)有四(si)個：
(1) 存(cun)(cun)(cun)儲(chu)(chu)(chu)容量：即(ji)一(yi)(yi)根內(nei)存(cun)(cun)(cun)條可(ke)以容納(na)的(de)(de)二(er)進(jin)制信息量，如常用(yong)的(de)(de)168線內(nei)存(cun)(cun)(cun)條的(de)(de)存(cun)(cun)(cun)儲(chu)(chu)(chu)容量一(yi)(yi)般多為(wei)(wei)32兆(zhao)(zhao)、64兆(zhao)(zhao)和128兆(zhao)(zhao)。而DDRII3普(pu)遍(bian)為(wei)(wei)1GB到8GB。 (2) 存(cun)(cun)(cun)取(qu)速度（存(cun)(cun)(cun)儲(chu)(chu)(chu)周(zhou)期）：即(ji)兩次獨立的(de)(de)存(cun)(cun)(cun)取(qu)操作之間(jian)(jian)(jian)(jian)(jian)所需的(de)(de)最短時(shi)間(jian)(jian)(jian)(jian)(jian)，又稱為(wei)(wei)存(cun)(cun)(cun)儲(chu)(chu)(chu)周(zhou)期，半導體存(cun)(cun)(cun)儲(chu)(chu)(chu)器的(de)(de)存(cun)(cun)(cun)取(qu)周(zhou)期一(yi)(yi)般為(wei)(wei)60納(na)秒至100納(na)秒。 (3) 存(cun)(cun)(cun)儲(chu)(chu)(chu)器的(de)(de)可(ke)靠(kao)性(xing)：存(cun)(cun)(cun)儲(chu)(chu)(chu)器的(de)(de)可(ke)靠(kao)性(xing)用(yong)平均故障間(jian)(jian)(jian)(jian)(jian)隔時(shi)間(jian)(jian)(jian)(jian)(jian)來(lai)衡量，可(ke)以理解為(wei)(wei)兩次故障之間(jian)(jian)(jian)(jian)(jian)的(de)(de)平均時(shi)間(jian)(jian)(jian)(jian)(jian)間(jian)(jian)(jian)(jian)(jian)隔。 (4)性(xing)能價格比：性(xing)能主(zhu)要包(bao)括存(cun)(cun)(cun)儲(chu)(chu)(chu)器容量、存(cun)(cun)(cun)儲(chu)(chu)(chu)周(zhou)期和可(ke)靠(kao)性(xing)三項內(nei)容，性(xing)能價格比是一(yi)(yi)個綜合(he)性(xing)指標，對(dui)于不(bu)同(tong)的(de)(de)存(cun)(cun)(cun)儲(chu)(chu)(chu)器有不(bu)同(tong)的(de)(de)要求。
