Does 64 bit Windows 7 use only up to 4 GB of RAM? What happens with the remaining 2 GB in a 6 GB RAM system? - Quora
How Can I Increase My Usable RAM To 4GB in Windows 7?: 13 Answers - and | PDF | Booting | Operating System
I bought a PC with 8 GB RAM. I installed Windows 7 in it, and now its showing that only 3.9 GB of RAM are usable? What about the remaining RAM? Is
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