why different version of 64-bit windows have different memory limit?



Version Limit in 32-bit Windows Limit in 64-bit Windows
Windows 7 Ultimate 4 GB 192 GB
Windows 7 Enterprise 4 GB 192 GB
Windows 7 Professional 4 GB 192 GB
Windows 7 Home Premium 4 GB 16 GB
Windows 7 Home Basic 4 GB 8 GB
Windows 7 Starter 2 GB 2 GB
I am looking at Windows 7 product and I don't understand why there r different memory limits the OS can support.

Win7 starter: 2GB

Win7 Home Basic: 8GB

Win7 Home Premium: 16GB

Win7 Pro, Enterprise, Ultimate: 192GB


Is it related to performance (e.g. kernel memory optimization) or is it just Microsoft's marketing strategy (binning)?




Question Info

Last updated March 18, 2019 Views 1,830 Applies to:

Windows 7 Starter targets hardware that cannot support no more that 2 to 3 GBs, making it a logical limit since most users are not gonna upgrade such hardware and will stick with either WIndows 7 Starter or upgrade to another 32 bit edition which is more than ample amount of memory to efficiently run it.


The different memory limits for 64 bit editions is attributed to the fact that the average consumer (well the majority of them at least) is not gonna buy or can afford a machine with 192 GBs of RAM (which cost about US $50,000) and don't have any use for it. 8 GBs is more than enough for most power users, advanced power users, scientist, engineers and gamers, persons dealing multimedia can even be satisfied with 16 GBs of RAM. If you want to go beyond the 16 GB limit, example of such scenarios include running multiple virtual machines or rendering a motion picture, you only choice would be Windows 7 Professional or Ultimate. Windows 7 Enterprise is available to volume license customers only. The 192 GB range is really for niche audiences and lottery winners.

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MVP-Windows and Devices for IT

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