Win7 x64 only sees 3 gigs of ram!

I'm using the 64bit version of windows 7 build 7100, and it only sees 4 gigs of ram, but only 3 is usable. I thought this was only an issue with 32 bit OS.
i got an
-Asus p5b-E motherboard
-intel 6600 dual core
-2 gigs of OCZ, Ram
-2 gigs Crucial, Ram
-Radeon 1950XT

Any ideas as to why it cant access the other 1 gig? i will upload screen shots later, but im at work right now.


New Member
Sounds like Video Card allocation.


Essential Member
What test did you run to determine it was only using 3GB?

Ok, im home now, i looked at my computer properties, along with a sidebar that measures my ram usage. you can see that in the top right corner. and its only using 3 gigs. any ideas?


Senior Member
It says usable...but don´t worry its all there, but the running programs eat up ~1,1gig of memory..
Its gonna change every time, don´t worry.

I also have the same issue


New Member
3,00 Ram Usable

I Have 6 GB in RAM and only 3,00 USABle..... I have the 64bits win7 Ultimate edition. The board is Intel 945GNT With 4 Slot, distribution: A = 2GB 800 MHZ B = 2GB 800 MHZ, C = 1GB 533 MHZ and D = 1gb 667 MHZ. In the Bios All Is OK, i cant see changes to do..., Whats the problem?

I fixed the issue. My BIOS required me to turn on the 'memory remap feature' and now the post screen and windows see the full four GIGS of RAM

^^ dam I was going to say that! without it your BIOS is limited acess to the first 3GB not your OS. Glad you fixed it

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