The six slots are, from top to bottom:

DDR3 3, 2, 1, 6, 5, 4

6 x 1.5V DDR3 DIMM sockets supporting up to 16 GB of system memory
Dual channel memory architecture
Support for DDR3 2200/1333/1066/800 MHz memory modules

That doesnt mean a whole lot to me

*********DDR3_3 DDR3_2 DDR3_1 DDR3_6 DDR3_5 DDR3_4
Six Modules SS ******SS *DS/SS ***SS ****SS **DS/SS

I think I need to check if that memory is single sided.