Summary: Systems configured with the Windows 7 (32-bit) and the Intel® Skylake chipset may report that less than 50% of the system memory is available.
Systems that have a 32-bit operating system installed are limited to 4GB usable memory. If the system has more than 4GB of RAM installed, it will not be recognized by the operating system due to the memory addressing limitations of the 32-bit architecture.
The amount of memory available for 32-bit systems is generally around 2.75 to 3.25 GB based on the hardware configuration of the system. Items like the PCI-e bus have memory allocated for their operation by the operating system, reducing the amount of memory indicated available by the operating system. (See Figure 1.)
There is no hardware failure with the system, it is working as designed.
System's with Skylake processors have been reported to allocate a large portion of the system's usable memory to the hardware. Skylake systems allocate more memory as they are often configured with Thunderbolt capability.
Not all Skylake system are configured with Thunderbolt, these systems will still allocate a larger amount of memory to hardware that non-Skylake systems. This is because the Skylake processor cores are built to support Thunderbolt functionality regardless of the system having actual Thunderbolt hardware installed.
EXAMPLE: A Windows 7 (32-bit) system reporting 50% or less memory usable (1.89GB usable) out of 4GB available. (See Figure 2.)
Dell Skylake systems (See Table 1.)
|OptiPlex Desktop||7040/5040/3040/7440 AIO/3240 AIO|
Article ID: SLN299440
Last Date Modified: 09/14/2019 07:50 AM
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