From what I have seen, and from what I can tell Windows 11 actually uses less RAM than Windows 10. This is because of the many new features that are available in Windows 10 that are not available in previous versions of Windows.. Is 4gb RAM enough for Windows 10 64 bit? How much RAM you need for decent performance depends on what programs you are running, but for almost everyone 4GB is probably OK. Like 32-bit operating systems, 64-bit