Why can't I use my full RAM i.e. 6 GB? Why is my laptop showing only 2.91 GB RAM usable out of 6 GB installed? - Quora
![990FXA-GD80 16gb RAM installed 7.9gb Usable, rest is hardware reserved | MSI Global English Forum - Index 990FXA-GD80 16gb RAM installed 7.9gb Usable, rest is hardware reserved | MSI Global English Forum - Index](http://i.imgur.com/VbERWac.png)
990FXA-GD80 16gb RAM installed 7.9gb Usable, rest is hardware reserved | MSI Global English Forum - Index
I have 4GB RAM installed in my computer but it says that only 2.45 GB is usable. I want to use whole of 4GB of RAM. How can I do it? - Quora
![Installed Memory vs RAM Usable by Windows | Installed Memory,RAM Usable,Windows,Diagnose Problems with Installed Memory vs RAM Usable and Reported by Windows Installed Memory vs RAM Usable by Windows | Installed Memory,RAM Usable,Windows,Diagnose Problems with Installed Memory vs RAM Usable and Reported by Windows](https://archive.techplayboy.com/images/articles/Installed-Memory-RAM/Windows-Installed-Memory-RAM-Available.png)