Have you read
The usable memory may be less than the installed memory on Windows 7-based computers? I guess the same principals apply to Windows 8.
Hope this helps & answers your question.
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.
How satisfied are you with this response?
Thanks for your feedback.