What are the limits of usable RAM for Window 7 pro 64bit. ?

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chuck_Bytes

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Mar 21, 2017
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Although I created a virtual drive for mem swap, I would prefer windows to use as much RAM as possible deterring it from using the pagefile.sys installed on another SSD drive.

I have 64gig of DDR3 installed and have read a number of comments stating that Windows 7 can only use up to 8gig of RAM.
If that is true, man did i ever waste money !!!
Why allow the ability to install RAM that cannot be used ????

I read the following statement about different version of Windows and how much RAM can be installed. But I do not understand if this is usable RAM or just allowed to install limits.
Upper RAM limits for the different editions of Windows 7 are:

Starter: 8GB
Home Basic: 8GB
Home Premium: 16GB
Professional: 192GB
Enterprise: 192GB
Ultimate: 192GB

If i installed 192gig of RAM on my system, how much of that will Windows 7 64bit be capable of using and how can i ensure it will be used, do i have to shut down the virtual memory ?

I read that Win 8 and 10 use all the RAM installed, is that true. ? if so, Do you think i should still retain a virtual memory with that much RAM ?
 
Solution
Snipergod87
You can install more RAM the system wont use it, say you have Windows 7 Home Premium with 32GB of RAM, the OS can only use 16GB. You need professional or higher to use the rest of the RAM, this is a way Microsoft has separated edition's among other features. Windows 8 and Windows 10 will have different RAM limits per edition as well but they are going to be higher than Windows 7

You should also never shutdown or disable the virtual memory (pagefile), some applications wont even load without some sort of a page file present and Windows uses the page file for BSoD dumps as well. You can though limit the size.
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Snipergod87

Snipergod87

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May 26, 2009
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You can install more RAM the system wont use it, say you have Windows 7 Home Premium with 32GB of RAM, the OS can only use 16GB. You need professional or higher to use the rest of the RAM, this is a way Microsoft has separated edition's among other features. Windows 8 and Windows 10 will have different RAM limits per edition as well but they are going to be higher than Windows 7

You should also never shutdown or disable the virtual memory (pagefile), some applications wont even load without some sort of a page file present and Windows uses the page file for BSoD dumps as well. You can though limit the size.
 
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TJ Hooker

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Apr 15, 2014
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If you have Win7 Pro 64 bit, then the OS should be able to make use of 192 GB of physical RAM.

Practically speaking, you're not going to be able to install more than 128 GB of DDR3 (and even that requires a xeon CPU and LGA 2011 mobo).

Outside of some specific applications, having 64 GB of RAM is pointless. 32GB, or even 16GB, is more than enough for most people.
 
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