The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Which SoDIMM will perform faster?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by HerbieC, Oct 15, 2005.

  1. HerbieC

    HerbieC Notebook Enthusiast

    Reputations:
    0
    Messages:
    48
    Likes Received:
    0
    Trophy Points:
    15
    question for you memory experts... what would be faster?

    1GB PC2-4200 DDR2-533MHz 200-Pin SoDIMM CL 4

    or

    1GB PC2-3200 DDR2-400MHz 200-Pin SoDIMM CL 2.5
    ??

    im concerned that the cas latency or 4 would make it slower than the PC-3200 with CL of 2.5 or 3. btw... im buying it for a vaio tx-series which has a 400MHz FSB. thanks.
     
    HerbieC, Oct 15, 2005
    #1
  2. coriolis

    coriolis Notebook Nobel Laureate

    Reputations:
    2,319
    Messages:
    14,119
    Likes Received:
    1
    Trophy Points:
    455
    I don't think either will make a difference, since your laptop will automatically clock the 533mhz down to 400mhz...
     
    coriolis, Oct 15, 2005
    #2
  3. Venombite

    Venombite Notebook Virtuoso

    Reputations:
    126
    Messages:
    3,532
    Likes Received:
    0
    Trophy Points:
    105
    You need to make sure your notebook can handle a CAS of 2.5. I remember a user in the Acer section that upgraded his ram himself, but used a module with a CAS that was not compatible. This made the system react badly (possibly no boot). After replacing the module with the same problem, he replaced it with a different CAS, it worked fine.

    Goto Kingston.com or Crucial.com and find a module that is compatible with your unit and get that. This way, you'll know it works.

    -Vb-
     
    Venombite, Oct 15, 2005
    #3
  4. HerbieC

    HerbieC Notebook Enthusiast

    Reputations:
    0
    Messages:
    48
    Likes Received:
    0
    Trophy Points:
    15
    ok... in that case the cl2.5 would be faster. what if the FSB was 533MHz? which would perform faster then?
     
    HerbieC, Oct 15, 2005
    #4
  5. HerbieC

    HerbieC Notebook Enthusiast

    Reputations:
    0
    Messages:
    48
    Likes Received:
    0
    Trophy Points:
    15
    both of those websites and mushkin say 1GB PC2-4200 DDR2-533MHz 200-Pin SoDIMM CL 4 is compatible. sony recommends the PC2-3200. i suppose what im not sure of is how the CL timing will affect its performance.
     
    HerbieC, Oct 15, 2005
    #5
  6. drumfu

    drumfu super modfu

    Reputations:
    436
    Messages:
    3,651
    Likes Received:
    0
    Trophy Points:
    105
    the latency issue is overblown. the difference is in the 5% or less range.
     
    drumfu, Oct 16, 2005
    #6
  7. HerbieC

    HerbieC Notebook Enthusiast

    Reputations:
    0
    Messages:
    48
    Likes Received:
    0
    Trophy Points:
    15
    ill take that 5% any day.
     
    HerbieC, Oct 16, 2005
    #7