Upgrading an old Sony Vaio's memory - DDR

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26 Mar 2004
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Currently has 2x256mb DDR memory which work as 512mb.

On the sony website it says maximum memory is 1gb for this PC.

If i install 1 512mb stick it only reads it as a 256mb.
if i install 2 512mb sticks it reads it as 512mb.

Now if i install a 1gb stick it reads it as a 512mb.
So if i put a 1gb with a 512mb or a 256 mb i get 768mb.

haven't tried with 2x 1gb yet.

I've tried different combos and different brands of the 512mb sticks. There are not a lot of options in sony and there are no firmware update for it on the sony website. Any ideas?
 
Are the sticks single/double sided?
dunno.gif
 
I dunno. how do you find that out? there's chips on both sides.

The new memory is new. bought recently. Could it be a compatibility problem?
 
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