+ Post New Thread
Results 1 to 12 of 12
Hardware Thread, 2 RAM sticks wont work together - why? in Technical; I have been upgrading the caretakers personal laptop for him, before he had 2 x 256MB RAM and wanted 2 ...
  1. #1

    Join Date
    Jul 2006
    Location
    London
    Posts
    2,963
    Thank Post
    160
    Thanked 153 Times in 117 Posts
    Rep Power
    50

    2 RAM sticks wont work together - why?

    I have been upgrading the caretakers personal laptop for him, before he had 2 x 256MB RAM and wanted 2 x 512MB to give him 1GB

    I ordered both modules direct from Crucial, although at different times, using their configurator tool.

    They both work perfectly - on their own. When I put them in together, Windows always blue screens justas it boots up or just after

    I wiped the system and used the recovery disks and the problem persists. I couldnt even use the discs with both modules in, that crashed as well

    Doesnt matter which slot each is in, it just wont get any further than starting Windows

    But what can I say to Crucial? Neither module seems to be faulty on its own, so do I need to send them both back? Anyone else had anything like this before?

    Im running memtest on both sticks now and so far theres over 900,000 errors
    I will try on both sticks seperately when its done

    The laptop is an Acer Aspire 1500

  2. #2
    Disease's Avatar
    Join Date
    Jan 2006
    Posts
    1,110
    Thank Post
    120
    Thanked 72 Times in 49 Posts
    Rep Power
    57

    Re: 2 RAM sticks wont work together - why?

    Sounds like they are not matched pairs, the laptop may require matched pairs.

  3. #3
    ChrisC's Avatar
    Join Date
    Mar 2006
    Location
    Dorset
    Posts
    767
    Thank Post
    2
    Thanked 1 Time in 1 Post
    Rep Power
    19

    Re: 2 RAM sticks wont work together - why?

    Exactly my thoughts.

    Chris

  4. #4

    Join Date
    Jul 2006
    Location
    London
    Posts
    2,963
    Thank Post
    160
    Thanked 153 Times in 117 Posts
    Rep Power
    50

    Re: 2 RAM sticks wont work together - why?

    Just checked for that on Crucials site

    http://www.crucial.com/uk/store/list...re+1500+Series

    "Q: Do I have to install matching pairs?

    A: No.

    No, you can install modules one at a time, and you can mix different densities of modules in your computer. But if your computer supports dual-channel memory configurations, you should install in identical pairs (preferably in kits) for optimal performance."

    However if they are wrong I suppose we have a case for replacements

  5. #5
    ChrisC's Avatar
    Join Date
    Mar 2006
    Location
    Dorset
    Posts
    767
    Thank Post
    2
    Thanked 1 Time in 1 Post
    Rep Power
    19

    Re: 2 RAM sticks wont work together - why?

    Yep. I would contact crucial, explain the problems etc and if you only got it recently they should help out really!

    Chris

  6. #6
    Disease's Avatar
    Join Date
    Jan 2006
    Posts
    1,110
    Thank Post
    120
    Thanked 72 Times in 49 Posts
    Rep Power
    57

    Re: 2 RAM sticks wont work together - why?

    IT's the laptop that might require matched pairs, certain Intel CPU's require that you have matched pair memory.

  7. #7

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,850
    Thank Post
    110
    Thanked 598 Times in 514 Posts
    Blog Entries
    1
    Rep Power
    227

    Re: 2 RAM sticks wont work together - why?

    Also try a bios update.

  8. #8

    Join Date
    Oct 2006
    Posts
    94
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: 2 RAM sticks wont work together - why?

    It's pretty obvious whats going on here. That laptop is fussy as far as memory is concerned which is always the case especially with Intel based systems.

    If you ordered them at different times it doesnt matter that they are the same speed and cosmetically look the same as it's possible to have variations on components and timings from different batches of ram from the manufacturer. This has happened to me in the past and a lot of people I know.

    Here are some things I would personally try:

    Try and find the ideal memory timings for the ram in relation to the make and model of laptop. Should be able to google for this and try to set the memory timings manually in the BIOS. Sometimes some hardware doesnt recognise the settings from the SPD chip on the ram or may get confused if they are from different batches of manufacture.
    This will effectively underclock the stick of ram that is faster than the other if this is the case.

    You could also underclock the ram. If it is 400mhz they might work together at 333mhz but thats a major performance loss and a bit compromise.

    Failing that the ideal solution is to send them back and get 2 identical matched pairs from the same batch.

    @Geoff, In my opinion there is no need to update the BIOS to resolve this, because the tolerance to ram variety is probably set by the hardware components soldered onto the mainboard and not in the BIOS.

    Still, you could try it but I wouldnt hold out in hope that this will resolve the issue.

  9. #9
    ChrisC's Avatar
    Join Date
    Mar 2006
    Location
    Dorset
    Posts
    767
    Thank Post
    2
    Thanked 1 Time in 1 Post
    Rep Power
    19

    Re: 2 RAM sticks wont work together - why?

    from 400 to 333, do you recon the end user will notice the miliseconds difference in performance?

    Chris

  10. #10

    Join Date
    Oct 2006
    Posts
    94
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: 2 RAM sticks wont work together - why?

    Quote Originally Posted by ChrisC
    from 400 to 333, do you recon the end user will notice the miliseconds difference in performance?
    Chris
    Probably not, unless they are educated geeks like many of us on this forum! The performance loss would only be more noticable under heavy load performance apps and not really MS Offirice or Internet Exploder!


  11. #11

    plexer's Avatar
    Join Date
    Dec 2005
    Location
    Norfolk
    Posts
    13,689
    Thank Post
    756
    Thanked 1,715 Times in 1,526 Posts
    Rep Power
    438

    Re: 2 RAM sticks wont work together - why?

    running memtest on both sticks now and so far theres over 900,000 errors
    hmm I'd say one or both of them is knackered then.

    Ben

  12. #12
    Disease's Avatar
    Join Date
    Jan 2006
    Posts
    1,110
    Thank Post
    120
    Thanked 72 Times in 49 Posts
    Rep Power
    57

    Re: 2 RAM sticks wont work together - why?

    Aye Knackered.



SHARE:
+ Post New Thread

Similar Threads

  1. USB DVB-T Sticks - Opinions?
    By Sirbendy in forum General Chat
    Replies: 9
    Last Post: 6th January 2009, 03:57 PM
  2. Appeal for USB sticks
    By bizzel in forum Hardware
    Replies: 0
    Last Post: 15th November 2007, 10:26 AM
  3. exe files on usb sticks
    By goodhead in forum Hardware
    Replies: 4
    Last Post: 15th February 2007, 06:18 PM
  4. USB Sticks
    By BKGarry in forum Windows
    Replies: 1
    Last Post: 9th February 2007, 05:19 PM
  5. Oh why wont the internet work anymore :S
    By tarquel in forum Wireless Networks
    Replies: 4
    Last Post: 27th August 2005, 08:33 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •