Noob Needs Help With Mobo And Mem

[reptile1]

mobo is gigabyte GA-P31-DS3L
mem is crucial ballistix 2gb in 2x1gb sticks
mobo has 2 channels of colour coded slots paired yellow/red
do i install 2x1gb mem in 1 channel pair of yellow/red ....or...1 in each channel-of either (both yellow or both red slots)?
both work but which is best set up for max mem etc
thanks
reptile1

 

[LuzSYfer]

i think with gigabyte its same colour slots for dual channel mode (so red-red or yellow-yellow)