System Monitor reporting 3.8 GB - Asus G51J - Motherboard version G60JX

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http://forums.fedoraforum.org – I have 2 x 2 GB memory sticks in my machine, why does System Monitor report 3.8 GiB? Where is the other memory going? Even if it is being used by the kernel, it seems that the system should report 4096 MB. There have been a number of posts from people using Fedora asking essentially the same question that I am about to ask. With that in mind, it seems unlikely that I will get an answer. Of course my real question is: is normal? If someone with the same laptop could report how much memory their system has (using any of the tools used below, preferably the BIOS-e820 data from dmesg or /var/l (HowTos)