i have install win 64bit in 4gb ram but it show 2.95 usable why????

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surajnaskar

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Apr 12, 2014
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i have recently install win 7 64 bit but my computer shows that in properties in my computer that 2.95 is usable pls can u tell me solution
 
Solution
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If you installed total 4GB memory, the system will detect less than 4GB of total memory because of address space allocation for other critical functions, such as:

- System BIOS (including motherboard, add-on cards, etc..)
- Motherboards resources
- Memory mapped I/O
- configuration for AGP/PCI-Ex/PCI
- Other memory allocations for PCI devices

Different onboard devices and different add-on cards (devices) will result of different total memory size.
e.g. more PCI cards installed will require more memory resources, resulting of less memory free for other uses.

On a SLI system, since PCI-Ex graphic cards will occupy around 256MB, another 256MB will be occupied after you install a 2nd PCI-Ex graphic card. Hence, 2.75GB memory left only...
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noahhicks

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Mar 29, 2014
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So it seems that currently your system is using 1.05GB for it's own uses and you have 2.95 free... Is this what you're saying?

Hit ctrl-shift-esc and see what it says in the performance monitor.
What program are you using to get this information?

Using 1.05GB is pretty good. I myself use about 2.1GB at rest, thank goodness I have lots to spare.
 
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Calvin7

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Feb 19, 2013
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If you installed total 4GB memory, the system will detect less than 4GB of total memory because of address space allocation for other critical functions, such as:

- System BIOS (including motherboard, add-on cards, etc..)
- Motherboards resources
- Memory mapped I/O
- configuration for AGP/PCI-Ex/PCI
- Other memory allocations for PCI devices

Different onboard devices and different add-on cards (devices) will result of different total memory size.
e.g. more PCI cards installed will require more memory resources, resulting of less memory free for other uses.

On a SLI system, since PCI-Ex graphic cards will occupy around 256MB, another 256MB will be occupied after you install a 2nd PCI-Ex graphic card. Hence, 2.75GB memory left only if two SLI cards installed .
 
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Solution
YAYNEWCARD

YAYNEWCARD

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Apr 30, 2014
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I once had this problem. I solved this by -
Go to start and type msconfig. Go to boot tab. In advanced options, uncheck maximum memory. See what this does.

Best Regards.
 
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