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). Maximum configurations require 64-bit operating system.
DDR2-533 and DDR2-667 modules can be mixed, however, they will default to the module with the slowest speed.
Per MSI, if double-sided DDR2-667 DIMMs are installed, they will only run at 533MHz. A CPU running a 533MHz FSB will also limit the speed of the memory.
