We have already seen what are the maximum RAM limits for Windows 7 / 8 64-bit earlier. Now is the time to see the memory or RAM limits for the different editions of Windows 10:

Windows 10 Home 32-bit : 4 GB
Windows 10 Home 64 bit : 128 GB

Windows 10 Pro 32-bit : 4 GB
Windows 10 Pro 64-bit : 512 GB

Windows 10 Enterprise 32-bit : 4 GB
Windows 10 Enterprise 64-bit : 512 GB

Windows 10 Education 32-bit : 4 GB
Windows 10 Education 64-bit : 512 GB

Read all you need to know about Windows 10 here.