In order to access the full 4GB, you must meet the following criteria:
One of the following chipsets (and any later with greater than 4GB support):
• Intel 975X
• Intel P965
• Intel 955X on Socket 775
• Chipsets that support AMD processors that use socket F, socket 940, socket 939, or socket AM2. These chipsets include any AMD socket and CPU combination in which the memory controller resides in the CPU.
The CPU must support the x64 instruction set. The AMD64 CPU and the Intel EM64T CPU support this instruction set.
The BIOS must support the memory remapping feature. The memory remapping feature allows for the segment of system memory that was previously overwritten by the Peripheral Component Interconnect (PCI) configuration space to be remapped above the 4 GB address line. This feature must be enabled in the BIOS.
You must be running an x86_64 (64-bit) OS.
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