Kingston offers "K2" kit part numbers for Dual Channel mode.
AMD Sempron processors support DDR2-533 and DDR2-667 memory only. DDR2-800 and DDR2-1066 modules are not supported with this processor.
A BIOS update from Biostar may be required to support DDR2-1066 memory on this motherboard. DDR2-1066 is supported by AM2+ CPUs only.