Mixing 2GB RAM with 4GB Module

Hi all

Just ordered a Levono Thinkpad x121e (i3 version) which comes with 2GB DDR3 - 1333MHz (1 DIMM) installed.

Rather than paying the crazy amount Levono want to increase the RAM I plan to buy extra from elsewhere (probably crucial.co.uk).

Would I be better just getting another 2GB module or would I be ok adding a 4GB module to the existing 2GB. (The 4GB is only a few quid more than the 2GB)

Is there any problem mixing 2GB & 4 GB modules.

Would I see any difference between a total of 4GB and 6GB?

Is there any point just getting 2 x 4GB modules or will there be no performance increase over the 4 or 6GB.

So many questions :-)

Thanks for any advice.

  birdface 09:15 08 Mar 2012

If a 32 bit version of windows it will only use up to 4 G/B.

Tried my Medion with the crucial scanner and it did say my computer would take another 4 Gb but could not say what.Just that it could take more.

Whether you can increase ram the way you want it I know not but I am sure that someone will be able to give you the advice that you need.


It is the 64 bit so should be able to see the extra memory.

  northumbria61 10:49 08 Mar 2012

To follow on from buteman - You just need to make sure what the maximum memory is that your laptop can support before purchase.

  Miké 11:10 08 Mar 2012

Recommended Crucial Memory for your laptop, it's always better to have a matched pair of memory modules.

  Miké 11:11 08 Mar 2012

Recommended Crucial Memory for your laptop, it's always better to have a matched pair of memory modules.

  Miké 11:13 08 Mar 2012

Sorry for the double post, but got 'site internal error' so didn't think I had posted first time around!

  Fruit Bat /\0/\ 11:25 08 Mar 2012

if its dual channel mode it will need a matched pair


  JayDay 08:42 09 Mar 2012

You only need matching pairs if you want to take advantage of dual channeling, but according to most sites the performance advantage is quite minimal.

I have dual channel architecture on my motherboard and am running with a 2gb module in one slot and a 1gb module in another with no issues at all.


  northumbria61 14:46 09 Mar 2012

You won't have any issues with the mix you describe just it won't be taking advantage of dual channeling which you have already discovered is minimal.

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