Quote: Originally Posted by Solarstarshines
ussually with any windows they leave 1 gig unused especially when you have the max recommended im using 8 gigs but only 6.83 are usable some memory gets shifted to the gpu but ultimatly windows will all ways leave one gig unusable
I do not think this is a general rule. RAM is constrained
1. either because the system needs some address space for other functions - typically graphics, the BIOS, IO cards, networking, PCI hubs, bus bridges, PCI-Express, etc. But that only applies to 32bit systems.
2. or there is a need for some real memory e.g. by an on-board graphic, the BIOS, etc. That applies to both 32 and 64bit.
Here is the example of one of my systems. As you can see, there are only 2MBs reserved.