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silky62678
Guest
Does the dual channel DDR work with the asus a7n8x deluxe if u have 3 sticks of ram installed? I know it works with 2 sticks but will it also work with 3 sticks of memory? all 3 sticks are 256 pc3200
i understand that. that's if you have..Originally posted by Kevin Ar18
Only two of the three chips will run in dual mode, and then only the smallest amount of memory that the two chips have in common.
In your example, you would have 2x256 chips in dual mode, and 1x512 chip in single mode.
When it comes to chips of different sizes, here's a good explanation from Anandtech:
http://www.anandtech.com/chipsets/showdoc.html?i=1654&p=3
Originally posted by Kevin Ar18
I'm not sure if I'm understanding your question exactly, but maybe I can clarify what I mean a little better.
On that second example, you have a total of 512MB on the system
The nforce2 chipset only uses two of the 3 memory banks in dual mode. I do not know which ones they are. From what you are telling me, it is the first and the second one in your diagram, so we'll just assume that what it is for sake of illustration.
In the two memory banks, one of them is 256MB and one is 128MB. The nforce2 chipset allows memory modules of different sizes, however it will only run an even amount on both pieces of RAM in dual mode.
To put it more simply, you would only have 128MB on the 256 chip in dual mode, and all 128MB of the 128MB chip in dual mode. That's a total of 256MB in dual mode. The rest of the memory on your system would run in single mode (another 256MB)
Here's a diagram based on the info you gave:
This is the physical placement of the RAM sticks. The nforce2 chipset allows the ones in red to run in dual mode:
[_____256mb______]
(gap)
[_____128mb______]
[_____128mb______]
This is a theorical representation of what actually happens to the system.
Red represents memory that is running in dual mode; blue represents memory that is running in single mode.
[_____128mb______][_____128mb______] = 256MB chip
(gap)
[_____128mb______] ................................... = 128MB chip
[_____128mb______] ................................... = 128MB chip
Originally posted by silky62678
So let me get this stright. 3 Dimm slots, lets say all 3 have 128mb pc2700. slot 1 and 2 are dual and the 3rd slot is single. if i have all 3 slots filled, slot 1 and 2 will still run the dual channel but the 3rd will work as single like it was designed to? are there any bad things of having both dual and single channel running at the sametime ?