前程如花之未来王者 DDR3深度评测

2007-10-17 12:57  |  作者:THESEA   |  关键字:DDR3

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  尽管DDR3技术领先,功耗更低,但作为主流内存的时代仍然还要等待相当长时间,不管这时间有多长,DDR3成为市场主流是不可逆转的,面对DDR3-2133MHz的诱惑,除了“前程如花”

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  在信奉频率至上的那个年代,处理器制造商绞尽脑汁提高CPU的时钟频率。但无论是英特尔还是AMD,在很长时间内,CPU频率的提高是依靠倍频的不断增长,外频却一直发展缓慢,似乎要定格于200MHz这一关口。这样的一味提升频率之路越走越窄,性能提升远远滞后于频率的提升,反而是带来更大的耗电和发热量方面问题,制造商心力憔悴,如果你对英特尔总裁当年惊天一跪还记忆犹新的话,或许能更能理解“心力憔悴”这四个字。

 64岁的英特尔总裁贝瑞特面对着6500人惊天一跪:“请原谅我们”(2004.10)

  面对31级流水线NetBurst架构的Prescott,当时90nm的先进制造工艺仅仅起到了救命稻草的作用:3GHz主频的Prescott功耗超过百瓦,如果主频真的提高到了4GHz,那还了得吗?贝瑞特单膝跪地的惊人之举,是对英特尔以往在处理器研发道路上走入了“惟主频论”失误的真心忏悔。

  在英特尔宣布取消发布4GHz的Prescott之后,采用更先进微架构的处理器也逐渐浮出水面。Core 2 Duo处理器的面世正是英特尔重新拾起“性能论”大旗的见证。Core 2 Duo除了全新的内核设计,更大的缓存外,另外一个对性能有莫大帮助的就是处理器外频终于有了突破。Core 2 Duo目前外频能达到333MHz,与长达几年一直困居200MHz的外频相比,有了质的飞跃。相信在未来,400MHz甚至更高外频的处理器也会安装在你我的计算机之中。

  长久以来人们更关注处理器对计算机性能起着的作用,但是也别忘了,内存同样是不可或缺的,它肩负着为处理器的高速运算提供数据资料中转、暂存的重任,再快的处理器没有适合的高速内存配合,性能也要大打折扣,内存的发展和处理器的变化是紧密相关的。当处理器外频的提高,前端总线也得到相应提高,这样就对内存带宽的要求也大大提高,这就必然要求更高频率的内存与之搭配。


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  1. 1.前言
  2. 10.DDR3内存实物欣赏
  3. 2.DDR2-800之后面临的挑战
  4. 11.DDR3测试平台及说明
  5. 3.DDR3:千呼万唤始出来
  6. 12.测试特别说明
  7. 4.DDR3内存的优势
  8. 13.DDR3:基本测试
  9. 5.DDR3:8-bit预取,提升带宽的关键技术
  10. 14.DDR3:应用测试
  11. 6.DDR3:更低功耗的架构
  12. 15.DDR3:游戏测试
  13. 7.DDR3:向高密度高容量发展
  14. 16.DDR3:简单超频测试
  15. 8.DDR3:延迟真的上升?
  16. 17.DDR3:前程如花
  17. 9.DDR3其它的一些重要变化
    
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