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Windows 7: How much of my RAM that is reported can I actually use?

02 Nov 2014   #11
LMiller7

Windows 7 Pro 64 bit
 
 

The 4 GB RAM limit for a 32 bit OS is an artificial limit. The OS is 32 bit but that refers to the virtual address space and has nothing to do with RAM addressability. Most even semi modern CPUs have a 36 bit address bus so can theoretically address up to 64 GB RAM. Some 32 bit server editions are able to address up to 32 GB RAM. And the method used to accomplish this is actually simpler than that used by a 64 bit OS, even when RAM is less than 4 GB.

There is a technical reason why the 4 GB limit was imposed but it is still an artificial limit.

All RAM limits in 64 bit Windows are artificial. Server 2012 Standard and Datacenter editions can address up to 4 TB RAM. That limit was imposed because Microsoft was unable to test it with more.

Note that I am speaking of RAM limits of the OS. In most cases the real limit is imposed by the hardware.


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02 Nov 2014   #12
riffwraith

W7 64 Ult
 
 

Quote   Quote: Originally Posted by AddRAM View Post
Doesn`t matter, you`ll never use more then 5 or 6 gigs anyway.
Oh really?

How much of my RAM that is reported can I actually use?-tm.jpg


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02 Nov 2014   #13
riffwraith

W7 64 Ult
 
 

Thanks guys. I guess what was really confusing me was 'available' vs. 'free'

Quote   Quote: Originally Posted by LMiller7 View Post
When referring to RAM 1 GB is defined as 1024 * 1024 * 1024 or 1073741824 bytes. When dealing with disk space most manufacturers define 1 GB as 1,000,000,000 bytes. So you have 48 GB RAM.
That seems to explain it pretty well.

Cheers.
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 How much of my RAM that is reported can I actually use?




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