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Windows 7: Increased RAM, decreased SSD free space

20 Sep 2012   #1
snsjets

Windows 7 Professional 64bit
 
 
Increased RAM, decreased SSD free space

Hello. I recently built a desktop with a Crucial M4 64GB SSD as the boot drive and installed Crucial Ballistix sport 16GB (4 x 4GB) on an Intel DP67DE motherboard.
1 of my memory modules went bad so I removed a pair to return to Crucial for exchange. During that time I ran the remaining 2 memory modules and was therefore at 8GB of RAM. Also during that time I noticed the free space on my SSD was ~25.6GB.
Today I reinstalled the remaining pair of Ballistix bringing the memory back up to 16GB. After that I noticed my SSD free space dropped to ~11.2GB.
Everything is running OK and I use a 1.5TB HDD for storage but I am puzzled as to the loss of 14.4GB of SSD space after increasing the memory.


My System SpecsSystem Spec
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20 Sep 2012   #2
LittleJay

Windows 7 Home Premium 64bit SP 1
 
 

Have you checked the size of your page file? I have 8 Gbs of RAM on my PC and by default Windows 7 makes the page file the same size as the amount of RAM.
My System SpecsSystem Spec
21 Sep 2012   #3
snsjets

Windows 7 Professional 64bit
 
 

I just checked it and it is indeed automatically allocating 16361mb. What setting did you end up using or does it even matter if it is left in automatic? Thanks
My System SpecsSystem Spec
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21 Sep 2012   #4
bobafetthotmail

Win 7 Pro 64-bit 7601
 
 

having a pagefile on a SSD isn't recommended, as it shortens the life of the device (more write cycles for nothing). Disable it.

Besides, with 8 gigs of RAM (or more) you don't really need any virtual memory.
My System SpecsSystem Spec
21 Sep 2012   #5
4wd

W7, W8.1
 
 

Quote:
indeed automatically allocating 16361mb
Try setting a custom Virtual Memory, Initial 200 MB, Max 2 or 4 GB. Then monitor it's utilization for some time. With your amount of ram installed, the pagefile may never go above 200 MB, but it's there if ever needed.
My System SpecsSystem Spec
21 Sep 2012   #6
x BlueRobot

 

It was basically a page file being created, disable the paging file settings as suggested, virtual memory is used from the SSD disk space when the physical RAM is being fully used by applications, and therefore becomes very low; virtual memory also has a much slower performance than physical RAM too.

Start > Computer > System Properties > Advanced System Settings left pane > Advanced tab > Performance box > Settings button > Advanced tab

The above path is for finding the virtual memory settings, if you didn't know how or forgotten.

Hope this helps,

Harry
My System SpecsSystem Spec
21 Sep 2012   #7
LittleJay

Windows 7 Home Premium 64bit SP 1
 
 

Quote   Quote: Originally Posted by snsjets View Post
I just checked it and it is indeed automatically allocating 16361mb. What setting did you end up using or does it even matter if it is left in automatic? Thanks
I have page file set at 2 Gbs, because with 8 Gbs of RAM a larger page file isn't necessary. Since you have 16 Gbs of RAM I would think you could easily set it to 0, or a much smaller size like I did without any problem.
My System SpecsSystem Spec
21 Sep 2012   #8
snsjets

Windows 7 Professional 64bit
 
 

Great! Thank you all for the responses/help!!
My System SpecsSystem Spec
21 Sep 2012   #9
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

Quote   Quote: Originally Posted by snsjets View Post
Great! Thank you all for the responses/help!!
You also probably have 16 GB of space devoted to hibernation.

If you don't use hibernation, you can reclaim the space with this command:

powercfg -h off

A few programs expect to find a page file, so I wouldn't eliminate it entirely. I'd reduce it to a low level---maybe 1024 MB minimum and 2048 MB maximum.

You might also check the amount of space devoted to System Restore. That is adjustable also.
My System SpecsSystem Spec
21 Sep 2012   #10
snsjets

Windows 7 Professional 64bit
 
 

I do not use hibernation. I entered the command to disable it but did not notice a difference in free space. Am I missing something?
I am back to 23.5GB free on the SSD after making the above changes to virtual memory settings.
My System SpecsSystem Spec
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 Increased RAM, decreased SSD free space




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