
The Memory Experts at Crucial answer this questions quite often: Why doesn't my Windows® PC recognize all of the memory I installed? Here's what's going on.... When you install, for instance, 4GB of memory in a 32-bit Windows system, your system reports only 3GB or 3.5GB. Don't worry - there isn't a problem with the memory. Not only is there a maximum amount of memory that your computer motherboard can accept, there is also a maximum amount of memory that your operating system can accept. Regardless of how much memory is installed. Some of it is reserved for use by the devices that you are using, such as a graphics card, a PCI card, integrated network connections, and more. That makes it unavailable for use as main memory. When you power up your computer, your system calculates the amount of memory needed for these devices--if you haven't maxxed out the memory in your system, it's invisible to you, and all your physical memory (the installed RAM) is available for use. But if you've maxxed out the DRAM in your system, this amount will be deducted from your physical memory, so the system does not recognize 100% of your DRAM. The maximum memory limitation varies by operating system, For instance, the 4GB memory limitation doesn't exist in 64-bit versions of Windows. For more information, go to www.crucial.com. More videos! Regular maintenance: www.youtube.com Why a memory upgrade makes sense: www.youtube.com What does memory do? www.youtube.com
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