Re: Decided on new hardware...pls read
Your first question, it will work so I agree with lhuser. I believe dual channel works when you have 2 memory modules. Usually, motherboards tend to have 4 all together so I'm thinking you can have 2 dual channel setup up to 4 gig max.
As you have mentioned, the 4x512MB setup will give you 2GB total dual channel.
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