Installed Win7 on SSD, unusual memory performance

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I would check out one of those guides for more efficiently using SSD the OS is hosted on. Things like disable process prefetch. You are not loading off a slow HD so prefetching has limited value. You can set Superfetch to only cache boot files. This should encourage the OS to have more ram free. But the system is really designed to fill up ram with what it thinks you might use. So it's not a problem unless you notice a performance hit.

I posted the template about filling in system specs because it's much better to use the form designed for it at the link. If you post 3 months from now nobody is going to search for this thread to get your specs when there's a link at the bottom left of all your posts.

btw if you run most of your applications off other drives then it's probably still beneficial to enable Superfetch for applications. I think it's all or nothing. I don't know of a setting to exclude a disk. But you never know with the thousands of Windows registry hacks/tweaks.

How about posting a screen shot of Task Manager Resource Monitor. Where it shows the color bar of memory usage. Or RamMap by SysInternals. Often on W7 mine only shows a few MB free, but a GB on Standby. The Standby fluctuates. Like if I do a video mux the free will be practically zero and the RamMap will show nearly all memory occupied by a memory mapped file from the muxing. After a while it levels back out.

Linux switched to this like 10 years ago or more. I ran top command and freaked out because it showed all my memory used. But it was just pre-fetching based on past usage.

Depending what you run, you are kind of one the cusp with 4 GB. On my 2 GB machine I run a swap and enabled pre-fetch. On my Vista PC I have 8 GB only cache boot files and run no swap. Often I have 3.5 GB free on the Vista machine. But W7 fetches better than Vista.

So I'd say the short answer is, if you have to look through a microscope for a problem, you may not have one. :)

I think it's more a matter of personal preference. For me, that kind of free memory would make me happy. :)
Some other members here are trying to get the system to pre-fetch as much as possible. As long as you can't detect any glitches, it's a matter of philosophy. You can play with the Superfetch. Windows is famous for not documenting things. If you look at the tutorial for setting Superfetch to only cached boot files, it says to set on Reg key to 2 and the other to 1 (enabled) but I notice when Windows installs itself, the default is both set to 3. After playing around I've come to the conclusion you really need to set both to the same number or nothing really happens. You'll see what I mean if you read the tutorial.

See my comment and the article above it here

Sure thing. Have fun tweaking. :)