I have been reading up on 32-bit VS 64-bit systems and have a few questions. I have a 32-bit Windows 7 running with 4Gb RAM but only 2.91Gb usable which I think can be attributed to the fact that my video card shares around 1Gb with the system memory.
Most people suggest that 32-bit systems can address a maximum of 4Gb which is obvious from the fact that 2^32 = 4Gb. However, they also say that one can utilize complete 4Gb on a 64-bit system. Now I know that a 64-bit system can address 2^64 bits of memory but the actual RAM in my computer still remains 4Gb. And 1Gb is shared with the video card so how can installing a 64-bit Windows 7 help in utilizing more RAM?
Most people suggest that 32-bit systems can address a maximum of 4Gb which is obvious from the fact that 2^32 = 4Gb. However, they also say that one can utilize complete 4Gb on a 64-bit system. Now I know that a 64-bit system can address 2^64 bits of memory but the actual RAM in my computer still remains 4Gb. And 1Gb is shared with the video card so how can installing a 64-bit Windows 7 help in utilizing more RAM?