MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode. Kingston offers "K2" kit part numbers for Dual Channel mode.
If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation).
Maximum configurations require 64-bit operating system.
AMD Sempron processors do not support DDR2-800/1066 modules.
At 1066MHz, this system supports up to two single rank modules ONLY.
DDR2-1066 is supported by AM2+ CPUs only.