Help 6.00 GB (5.85 GB usable)

acer aspire 5750G i7 2630QM NVIDIA GT540M 2GB Windows 7 ultimate SP1 64bit my ram is one 4gb and one 2gb
in my system info it says "Installed memory (RAM) 6.00 GB (5.85 GB usable)" why?
i never update the bios anyone help thankyou guys.
3 answers Last reply Best Answer
More about usable
  1. Best answer
    Windows allocates a certain amount of RAM to be used by the system. THere is nothing you can do, besides, anything above 4GB is enough for most usage.
  2. Because some MB are "reserved for hardware", most likely the NVIDIA GT540M in your case.
  3. thank you very much guys. thankyou noidea_77 thankyou Vovuake
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