I have 4 GB of RAM installed but Windows only reports a little over 3 GB. Will SuperSpeed products use the memory above 3 GB?
The answer to this question depends on the computer’s motherboard and how it and the operating system are configured to manage memory. SuperSpeed products utilize only those resources the operating system recognizes and makes available. The operating system depends on the motherboard’s chipset and BIOS to manage memory present in the system. If “Task Manager” or the “General” tab of “System Properties” show well under 4 GB of RAM (typically 3.25 GB), first try updating the system’s BIOS. Microsoft provides a Knowledge Base for further steps that you can take to make more main memory available to the operating system. In some systems this problem exists because their motherboards are limited to a 32-bit physical address capacity and therefore can only access 4 GB total physical memory. Although the processor may have the capacity to address much more, if the motherboard or its chipset support only a 32-bit physical address space, that’s the system’s limit. A computer with a motherboard
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