System: 24GB ram (16GB usable)

Hello,
I upgrade my memory from 6 to 24GB with Patriot 2 sets of 3 4GB sticks 1600MHz. To my asus P6TD deluxe. Computer only reads 24 but only 16 usable...??
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More about system 24gb 16gb usable
  1. Which is your operating system? Does your motherboard support beyond 16GB?
  2. Chirag Borawake said:
    Which is your operating system? Does your motherboard support beyond 16GB?

    Try reseating your ram,of course this is just a diagnostic suggestion to see if it will correct your problem.
  3. Maybe you using Windows 7 Home Premium 64 bits, don't you?

    This OS is limited in 16GB usable memory.
    Here's a list of limitations for 64 bits Windows 7:

    Home Basic: 8GB
    Home Premium: 16GB
    Professional: 192GB
    Enterprise: 192GB
    Ultimate: 192GB

    EDIT:
    (Got info from Microsoft in this website: http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778%28v=vs.85%29.aspx)
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