Hello, my computer is i7, im using Windows 7 64bit, DFI LANPARTY DK x58 mobo, and G.Skill 6GB (3x 2GB) Triple Channel Memory, PC3 12800 (1600MHz) DDR3, 240-pin DIMM, Unbuffered, Non-ECC, CL 7-8-7-24-2N (F3-12800CL7T-6GBPI).

My trouble is, it says 6.00GB installed (4.00GB usable) in system properties...

What this mean and how to make it s6.00GB usable...

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  1. I'm not sure where you found the system properties screen, but I am not positive that you know why only 4 GB is usable. Here is an excerpt from this link:


    "Each device in the system is assigned an address, which takes some of this space. Because the address space is limited, the more hardware you have, the more space is required to address them. Memory (RAM) will get what is left over, and it is this is what takes usable memory in a 32 bit system from 4Gb of RAM to around 3.25Gb."

    So, the addressable space being used by your devices is taking part of your RAM. Why your machine is using 2 GB RAM for address space, I am not sure. Maybe I am not even pointing you in the right direction. Maybe someone else that has more experience can confirm this for you.
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