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I'm running Windows 7 Pro x64 with 4GB ram. The thing is, when I load up Star Wars: The old Republic, that program readily occupies around 1.5GB memory, according to task manager. In resource monitor, the private memory used is a bit lower, but still around 1GB. The only other application running is Chrome with a few tabs.

My question is now, why does this lead to me being completely out of memory and causing excessive harddisk thrashing?

Task manager lists my available memory as:

Total       4094
Cached        76
Available     77
Free           0

Resource monitor lists 0 as hardware reserved. Does Windows 7 + services really use 2.5GB memory? Or am I missing something completely obvious?

Thanks in advance.

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Open up Resource Monitor from task manager and have a look at the memory section. This will give you a much more detailed breakdown of the memory usage. – myotherme Dec 20 '11 at 13:47
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The only other application running is Chrome with a few tabs.

Chrome can use between 50MB+ depending on how many tabs you have open. How much memory exactly is Chrome using?

Does Windows 7 + services really use 2.5GB memory? Or am I missing something completely obvious?

You have other applications running.

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3 tabs in Chrome, ~280 MB memory according to chrome://memory-redirect/. This still doesn't explain everything. Maybe Windows 7 is just more memory hungry than I would have thought. – Bjørn Madsen Dec 20 '11 at 14:30
I run Windows 7 in a VM with only 1GB of memory and it works, so it certainly don't take too much. You must have some memory hungry background programs like anti-virus running, – billc.cn Dec 20 '11 at 14:50
Only MSSE which really doesn't eat that much. Meh, at least it's a good reason for actually doing that upgrade I want :) – Bjørn Madsen Dec 20 '11 at 15:02
@Bjørn - While Windows 7 might use more memory then Windows XP for many reasons, it certainly doesn't use 2.5GB of memory, still have not told us what else is running. – Ramhound Dec 27 '11 at 12:41
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