hi, I am confirmly using 64bit. . when i was using my integreted graphics the usable amount of ram was 3.86GB but when i installed my 9600gt it went down to 3.24GB . . i have DH55TC . . I also examined the video configuration in bios . . i lowerd the DVMT to 128M. I also enquired the hardware reserved in Resource monitor, there was 778mb was reserved . . how to solve it?? please help!!!
There may also may be a memory remapping function in the bios somewhere that needs to be on. If not, the motherboard will map the hardware into a 4 gb window and gobble up some memory, just like a 32 bit os.
If you have 4GB and Windows can see only 3.24GB, download ans install the VSuite Ramdisk Free Edition from http://www.romexsoftware.com/en-us/index.html, create a ramdisk of 768 MB using the "OS Invisible Memory" option, then set the Windows pagefile to that disk.
I am not sure about this, but it seems to me that whether the OS is 64-bit or not, it still has to allocate 725-750 MB of memory for the hardware; my understanding is that the 8 TB that the OS can use as "addressable space" is only the ceiling of how much RAM you can put in the computer which the the RAM will actually use and it still has to allocate hardware resources of 725-750 MB, all of the hardware in the computer that needs to be addressed still being the same amount regardless of what OS you are using. What do you guys think?