DDR memory compatibility

  fredinjorox 18:55 22 Oct 07

We have 2 laptops in the house. A Sony with 512K of memory running XP and an Asus with 1 Gig running Vista.

I am thinking of upgrading the Acer to 2 Gig. Will I see a noticable difference.

Will the 1 Gig I have to remove.

Package: 200-pin SODIMM
Feature: DDR2 PC2-5300
Specs: DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V
be backwards compatible with the Sony which uses.

200-pin SODIMM
Feature: DDR PC2700
Specs: DDR PC2700 • CL=2.5 • Unbuffered • NON-ECC • DDR333 • 2.5V

I can see the obvious voltage difference but otherwise it would possibly physically fit, or would it.

  brundle 18:57 22 Oct 07

No, one is DDR, the other is DDR2. The socket will have notches in it preventing installation of the wrong memory type.

  fredinjorox 19:06 22 Oct 07


How did I know I was going to be told that!

OK so I bin the 1 Gig, which goes against the grain of my in built Yorkshire meanness.

Is the 2 Gig upgrade to the dual core Acer going to make a noticable difference or should I just not bother and remove the pain!!

  AL47 19:09 22 Oct 07

2gb istead of 1 should be fairly noticable

  fredinjorox 21:47 22 Oct 07


I will go ahead with the upgrade as DDR2 memory as it is quite cheap and just reluctantly bin the old memory.

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