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Best way to take advantage of DDR2?

by NLFlower / January 30, 2007 4:08 PM PST

Hello to all!!! I have a question about how to best take advantage of DDR2. What (very) little I do know is that you need to use two memory modules (making sure they are in the right slots for DDR). My question though is this. Do the two modules need to be the same size or can they be different? I know the speeds should be the same, otherwise the default to the slower one. I wanted to upgrade the RAM on a friend of mine's desktop. He has one 256MB module (I know, I know). The system supports DDR2. Should I just get one 1GB RAM module for the other bank (his desktop has two RAM slots) or should I buy two 512 modules and replace the 256? Any help you can provide would be greatly appreciated. Thank you for your time.

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I think you are confused..
by steve749 / January 31, 2007 12:09 AM PST
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computer specifications
by linkit / January 31, 2007 12:36 AM PST

Jbking2 gave you some good links. I'll just add a little.

You need to look at the specifications for that particular computer model at the computer maker's website. They will tell you what type of memory module (RAM) is compatible with the computer. They will also tell you if the motherboard has the capability of operating two memory modules in dual channel mode (some motherboards don't support this).

Another way of learning about the computer is to enter its make & model at a memory website like Crucial.com. This is often easier than trying to find the information at the computer maker's website.

If you need help, post the computer make & model number here. Also tell us what operating system the computer is running.

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Thanks!!!
by NLFlower / January 31, 2007 3:16 AM PST

Thank you Jbking2 and linkit for your posts. I made the mistake of crossing up dual channel with DDR2 (clearly I'm no computer expert). Now I get it (light bulb turns on overhead). I checked out the links. Very helpful. Linkit, I also use the Crucial.com website. I especially like the system scanner that automatically tells you which memory will work. Thanks to both again for your help.

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