为啥内存 DDR 代数越高 ,时序越差? - V2EX
V2EX = way to explore
V2EX 是一个关于分享和探索的地方
Sign Up Now
For Existing Member  Sign In
520discuz

为啥内存 DDR 代数越高 ,时序越差?

  •  
  •   520discuz Jan 27, 2023 2058 views
    This topic created in 1185 days ago, the information mentioned may be changed or developed.
    别看 DDR5 和频率有大好几千 据说时序也比 DDR4 高 据说 DDR4 的时序也比 DDR3 高 据说时序越低速度越快 这岂不是逆向发展了?
    4 replies    2023-01-27 19:40:28 +08:00
    msg7086
        1
    msg7086  
       Jan 27, 2023
    > 据说时序越低速度越快

    同 频 下 时序越低速度越快。
    Xusually
        2
    Xusually  
       Jan 27, 2023 via iPhone
    频率在提升啊 总的来说带宽是一直在提升的
    wiix
        3
    wiix  
       Jan 27, 2023
    时序中的 CL ( CAS 延迟)是相对于内存的时钟周期而言的,可以简单理解成“1/频率”,并不是简单的数值越大就越差,需要综合考虑 CL 和频率。
    事实上 DDR 内存的核心频率一直没啥进步,从 1 代到 5 代都在 133MHz~200MHz 徘徊,而且每代初期的核心频率都偏低,再加上内存控制器和 BIOS 调教不成熟等原因,实际延迟( aida64 上的 latency )才会相对上代高端较差。
    elfive
        4
    elfive  
       Jan 27, 2023 via iPhone
    时序除以频率不才是实际延时么?
    About     Help     Advertise     Blog     API     FAQ     Solana     1173 Online   Highest 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 36ms UTC 23:48 PVG 07:48 LAX 16:48 JFK 19:48
    Do have faith in what you're doing.
    ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86