MSI MS-6575 Ver3.0, a single chip SiS651/962 support 1GDDR333 it?

MSI MS-6575 Ver3.0, a single chip SiS651/962 support 1GDDR333.But when you buy the best choice 2 × 8, is the memory of the black block that is 16.Compatibility may be better

chip set parameters:
use SIS651 chipset design:SIS651 + SIS962L
FSB 400 support / 533MHz front side bus system Memory
Group 2 slots 184-pin DDR DIMM memory
support DDR200/DDR266/DDR333 largest
supports 2GB