Example: Pavilion G4 1303 AU: RAM not fully use

My g4 pavilion have 2 GB of RAM. but when I install windows 7 (64-bit) RAM say is 1.48 GB usable... why?

Can I use the memory full well, I have a lot of processes running, and I've never disabled anything using msconfig.

The available memory is NOT used by Windows, it is used by the material itself.

Disabling the programs with msconfig will NOT solve this problem. An update of the BIOS can.

Please take a look at THIS page for more details.

Citing a moderator of toms hardware:

When the computer is turned on, the system (BIOS/UEFI) firmware Initializes the memory and peripherals. Part of this process is to create a relationship between the method of access to the memory (physical address space) and the memory itself.

The firmware may reserve some of the memory itself for the use of material. The biggest offender here is typically a PGI, if they are present.

Memory is also reserved for the management engine of the platform, which is a component of the chipset which control the features of the platform independent of the main operating system. Management engine is a small embedded microprocessor (not x 86 based) with its own operating system which shares the physical address with the CPU space.

The firmware also allocates memory (not memory itself) addresses for PCI and PCIe devices. For compatibility reasons, this area of memory is aligned on the top of the lower 4Gio of the physical address space. Physical memory that would take care of this region is moved; to make this accessible memory, most motherboards it remap to a location in the address space.

In total, on 20MiB of 60MiB memory is made inaccessible to the operating system. Operating system can tell that this is looking at the DIMM SPD and the tables of firmware, but this operating system is not allowed to access or manage the memory of these regions.

in your case, more than 500 MB is not available. It is most likely a problem of design with the AMD IGP, and you can probably do nothing about it. 1.48 GB is not really enough for a smooth Windows 7 experience. I recommend spending at least 4 GB.

Tags: Notebooks

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