4GB of memory available, but only 3.2GB is accessible.
4GB of memory available, but only 3.2GB is accessible.
I consistently see 3.2GB available and 770MB reserved, even after adding four 2GB RAM sticks. I used a 64-bit version of Windows 10 and checked "Max Memory" in msconfig, but it remains unchanged.
I attempted to take out one of the RAM modules, but it only consumes 2.1MB for Hardware Reserved.
What chipset does this Mobo use? You're detecting an older 945-based chip, likely with a maximum storage capacity of 3.25 GB.
You have a mix of PCs with different specs. One has an i7-4790 with integrated GPU and a GTX 745, but it doesn’t save much memory. Another has an Intel 2970WX with no integrated GPU and a 20800Ti, which keeps around 135MB free. A Dell notebook with a 3500U and Vega8 GPU retains over 2GB. It’s unclear why this happens, but you can adjust settings in the system, though it’s uncertain what the outcome will be.
I located "Intel® Desktop Board D945PLNM" on the motherboard. This appears to be the sole marking I found. It seems this board supports only PCI or PCIE GPUs, and it doesn't seem to have an integrated graphics option. The BIOS settings are quite restricted.
The board uses the Intel 945PL express chipset and is restricted to 3.25 GB of RAM. The best solution is switching to another motherboard.