How much RAM 64bit Windows 8 reserves to OS internal use?

Posted by Barleyman on Super User See other posts from Super User or by Barleyman
Published on 2012-11-29T10:00:30Z Indexed on 2012/11/29 11:10 UTC
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windows-8

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memory

Windows reserves some memory for it's internal use which is not normally allocated to applications. This reserve is seen most easily if you run without a page file or limit the pagefile to relatively small size (such as 3GB). Windows will allocate primarily RAM up to the limit, fill up remaining free space in the page file (if any) and issue a low memory warning when there is no page file space left and the allocated RAM limit is exceeded.

The limit appears to be a percentage of the total system RAM. Windows 7 x64 limit is discussed here and methods for circumventing the "low memory warning" is discussed here.

Disabling the low memory warning has some advantages - You can use some 600MB more RAM on 8GB machine) But there is a serious disadvantage - When you're out of ram, programs will crash.

How much RAM can you allocate on 8GB Windows 8 x64 before you get the low memory warning? Is it possible to adjust the warning threshold?

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