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I use an old system with a G31D-M7 motherboard with 2 DDR2 memory banks. The module I plan to use is a 2GB DDR2-667 type. I'm sure my existing module is a 1GB DDR2-667 too. The Brands are not same.

I understand maybe having two identical 2 GB modules and possibly upgrading my motherboard would be the optimal solution but in my scenario, that's not possible. So kindly tell me if these two modules will get along in my motherboard.

Also, do those need to be slotted correctly or can be slotted in any order I desire?

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up vote 1 down vote accepted

That will work without problems. (If you're sure both sticks have the same frequency capabilities)

You just won't be able to use the "dual channel" which is just a performance enhancement. See Wikipedia page about dual channel for more details.

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