I am replacing curreent memory with  2GB into my 530s.  Is there a protocol or order (1st closest to..) as to which mem set I have in there to be removed first.

As things stand now:

Slot Size Speed Type
Slot 1 1024 Mb 667 Mhz undefined
Slot 2 1024 Mb 667 Mhz undefined
Slot 3 1024 Mb 667 Mhz undefined
Slot 4 1024 Mb 667 Mhz undefined

Thank you.