Here is your answer:

http://img262.imageshack.us/img262/9002/asuscj7.gif

So your board will support different size memory, as long as you follow the above diagram. You can still keep dual channel operation if you adhere to it. ie. - 2x 1 GB and 2x 512MB for example for a total of 3 GB, as long as they are matched between sockets.

-S

I think I go for 2x512 MB then. Would cost 2x29 euro, while 1x1GB costs 49. It's only 9 euro difference, and I have 512 in all four slots then.

It's also cheaper if one bar would break down (already happened one time) and must be replaced.

Thanks!

Anything to help a fellow subsimmer! :D

-S