![]() ![]() The amount of memory needed for these devices is calculated by your system at startup if you haven't maxed out the memory in your system, it's invisible to you, and all your physical memory (the RAM that's installed) is available for use. ![]() What happens is that some of the addressable memory (regardless of how much you have physically installed) is reserved for use by page files or by some of the devices that you are using, such as a graphics card, PCI card, integrated network connections, etc., so it's unavailable for use as normal main memory. Windows allows for 4GB of memory to be addressed, but this isn't 100 percent the same as having 4GB of physical memory. There isn't a problem with the memory in this instance. ![]() There is a maximum amount of memory that your computer motherboard can accept, there is also a maximum amount of memory that your operating system (OS) can accept.įor instance, when you install 4GB of memory in a 32-bit Windows® operating system your system will see (and utilize) only 3GB or 3.5GB. The maximum amount of memory that your system can use is limited in two ways.
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