DDR3 Ram for this MoBo

[Pict]

Can I have suggestions as to which DDR3 Ram will run on this MoBo
Gigabyte GA-880GM-UD2H AMD 880G (Socket AM3) microATX DDR3 Motherboard

 

[Pict]

Could you please expand on this.
What is CL7 ?
I bought Corsair Dominator 4GB (2x2GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (CMD4GX3M2A1600C9) and it will not run on this board.