Windows 7 64 bit only using 20% of RAM

September 27, 2011 at 14:54:25
Specs: Windows 7 64bit, 6GB
Hello! I am running Windows 7 64bit on a Dell XPS 15z, with 6GB RAM and a 2.70GHz i7 dual core processor.

My question is why is my laptop not using all of its free RAM? I understand some RAM, generally around 2GB I think, is used to run Windows and the graphics etc., but I should still have around 4GB to use. Yet, I have never used more than 2GB of RAM even with multiple tabs open in Chrome, and multiple large files open in Photoshop.

Here's a link to a screenshot of the task manager, because I don't think I can post images here: Screenshot

As you can see, I have 6GB total with 2GB cached (assuming for Windows and graphics and whatnot) and 4GB available, yet I only use 2GB and have 2GB free that I seem to never use. What can I do to utilize the extra RAM that it seems to refuse to use, even when going long periods of time 90%-100% CPU usage?

Thank you!

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September 27, 2011 at 15:47:12
The amount of RAM in use is dependent on what programs are being run.

Laptops throttle the speed of the processor to conserve battery life. So the processor usually will still run somewhere near 100% most of the time.

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September 27, 2011 at 16:25:49
Your computer is actually using about 4 GB of RAM for useful purposes. The 1.95 GB shown in the gauge doesn't even come close to accounting for all usage. That labeled as "Cached" belongs partly to the system cache (file data kept in RAM for quick access), and the standby list. The latter belongs to processes but can be quickly reassigned if necessary. Cached does not imply that it is used for Windows or graphics purposes.

There is no direct relationship between CPU usage and memory usage. A process could have very high CPU usage and very low memory usage. Or it might have very high memory usage and zero CPU usage, or anything in between.

I can't explain the high Free memory. Be sure you haven't turned off Superfetch.

Aside from that there isn't really anything you can do to materially influence how Windows manages memory.

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September 27, 2011 at 17:45:49
You are not using the ram more than likely because there is no need. Windows 7 is a good product and does a lot of things to help ram.

I'd tend to doubt the 2G for video but I can't see the screenshot.

Photoshop needs quite a lot of edits to get it to use ram in some reasonable manner. It is easy to get a 2G file. See photoshop web pages for all the things you need to do to get CS to work better.

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