Question: will fsx run on windows 7 64 bit?
Answer: - as FSX is built as a 32-bit app, even under 64-bit Windows 7 it will never use more than 4 Gb of memory (physical i.e. RAM, or virtual) for the application. - even under 64-bit Windows 7, to use up to 4Gb, a 32-bit application like FSX must be built as one which is LARGEADDRESSAWARE.