ANSWERS: 2
  • The amount of RAM recognized by your operating system will be based on whether it uses a 32 or 64 bit processor, not the actual operating system itself. Windows XP/Vista 64 can easily recognize 24GB of RAM. 2 raised to the 32 power is a little over 4 billion. That's why it can't 'see' more. Do 2 raised to the 64th power. That's how much ram a 64 bit system can see.
  • a 32-bit operating system can handle a 4 GB address space. Since some of this address space is used to control the computer hardware, less can be used for addressing RAM - often 3 or 3.5 GB. A 64-bit operating system can address up to 2^^64 bytes -- a lot more than 24 GB. Now this is only a theoretical limit - each operating system may have other factors which affect the amount of memory which can be addressed. With Windows 7, the maximum memory depends on the version: * Starter: 8GB * Home Basic: 8GB * Home Premium: 16GB * Professional: 192GB * Enterprise: 192GB * Ultimate: 192GB Before you splurge on 24 GB ram, make sure your motherboard can handle it - there is no point putting three 8GB dimms into a motherboard that can only handle 4 GB dimms and as for what's new... Are you starting from XP or Vista (or something else entirely)? Best I've seen is it's a Vista that works.. I'm sure it's really more than that

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