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    swap t400 ram into t520

    Discussion in 'Lenovo' started by keltix, Mar 16, 2012.

  1. keltix

    keltix Notebook Deity

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    is this legit?

    or would it depend on the stick itself?
     
    keltix, Mar 16, 2012
    #1
  2. lead_org

    lead_org Purveyor of Truth

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    you can do it, but the T520 is capable of supporting 1333 mhz ram, and most T400 ram are clocked at 1066 mhz, so you are in effect slowing down the laptop by using the T400 ram in the T520 system.
     
    lead_org, Mar 16, 2012
    #2
  3. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    I would note that the Sandy Bridge on-die memory controller gives a big boost in performance compared to previously. The ,memory bandwidth approximately doubled, even for older RAM.

    The top entry in my table here is probably a good indicator of the performance you will get.

    John
     
    John Ratsey, Mar 16, 2012
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  4. MidnightSun

    MidnightSun Emodicon

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    You won't notice any performance losses by using your T400's RAM, although technically the speeds are lower than the maximum that the T520 will support. So, if it's between that and buying new RAM, I'd just use the old sticks.
     
    MidnightSun, Mar 16, 2012
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  5. keltix

    keltix Notebook Deity

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    actually maybe this isn't such a good idea since the sticks may be damaged. I was in a bike accident and it (t400) onlys turns on for a few seconds... the HDD took some damage for sure but who knows what else like the RAM; i was considering using the battery too but not sure
     
    keltix, Mar 17, 2012
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  6. lead_org

    lead_org Purveyor of Truth

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    battery on the T400 won't work in the T520.
     
    lead_org, Mar 17, 2012
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  7. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    If the RAM is physically damaged then the computer wouldn't boot at all.

    John
     
    John Ratsey, Mar 17, 2012
    #7