Installing more memory to a Compaq Presario R4000 laptop

I have a Compaq Presario R4000 laptop that has a total of 512mb of ddr 2700. When I opened the bottom cover all I can see I one of them. The other is under the keyboard. I am wanting to upgrade the laptop to at least a total of 1 gb. My question is which would be the better and which would be the easiest? I could just add a 1gb stick to the one that I can see without having to remove the keyboard or I can remove the keyboard and add 2-512 mb sticks. Will the performance be that much greater if I added 2-512 rather than just adding 1gb stick to the easier slot without having to remove the keyboard?
So to shorten this its : 2X512 ddr 2700 vs 1-256 ddr 2700 and 1- 1024mb ddr 2700
bbbb2Asked:
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Sujith_NairCommented:
hi! there...as I can make out the one you are seeing are external Memory modules as per HP Service Manual
You can take a look at quick steps explained for under the keypad RAM

It doesn't matter much if you install 2x512 or 1x1024, Moreover it will always be slightly better/faster  if u install 1x1024 (reduced paging). You can just install 1024 at the back external slot , leaving the internal(under keypad as it is) thereby making total of 256+1024, its a fast and better solution (fast to install/fast on performance, hassle free) for you if you are looking for 1GB only.
or you can as mentioned in other comment install 2x1024.

regards
Sujith
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lee555J5Commented:
Within certain constraints, more is always better.
See this site at Crucial memory http://www.crucial.com/store/listparts.aspx?model=Presario%20R4000%20Series
I would add a 1 GB stick and leave the one under the keyboard alone. However, if you wanted to, it looks like you could pull out the 256 and put in 2 1 GB sticks. It depends on $.
Lee
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nobusCommented:
here how to install them :  http://www.bixnet.com/meinguforcor.html
as said, installing 1 Gb will be easy, under the keyboard requires a bit more work - you can upgrade to 2 GB
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