(Technology of 3) fictitious memory improved the performance of Windows NT system really, but also get speed of size of space of machine hard disk, hard disk, processor (the influence of CPU) speed, set out from good point of view, the performance that should improve the computer must reduce the number that exchanges an operation, but computer of neither one WindowsNT does not produce exchange, this should have enough physical memory with respect to requirement computer, in order to maintain least commutative operation.