Dual channel RAM question

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I have a gigabyte ep45-ud3r motherboard that supports dual channel ram and currently have 2x1gb OCZ 1066MHZ matched pair in the yellow slots. I just bought the same brand and speed ram today but in 2x2gb sticks for a total of 6gb. My question is which slots should I put the new RAM in for the best performance with the current RAM. Thanks
 
Dual channel allows the computer to access both banks at the same time thus doubling the effective bandwidth. Only works if the sticks within each bank are identical.
bank 1 = slot 1 + slot 3
bank 2 = slot 2 + slot 4

Would work with 4 sticks but two sticks is more stable.

That's as far as I know.
 
put the larger sticks in channel #1, and the smaller sticks in channel 2
although if you are running a 32 bit OS, it doesn't matter as it will only let you use 2.75-3.25 mb of memory. if you are using a 32 bit OS, you should just put your new 4GB kit of ram in channel #1 and remove the other 2 gb.
 
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