ram usable problem

zetixpe77

Honorable
Dec 27, 2013
2
0
10,510
hi
Few day ago I instal windows 7 .
Now i have few question

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Why 1 GB is usable ?? This mean when system need he use this ?? or i must tell him t use ??

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what is hardware reserved why system save 1GB for what ?? is any option to switch off this??

I google to find answer for that and there was option to use msconfing but when i change to maximum after reset numbers back to 0.

i run dxdiag show my this
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why there is 2 cpu there ?? and back again to msconfing i try switch this too

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but after reset nothing change , do I need make this change permanent to see diffrence or better do not change this ??

another dxdiag show this

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how to switch off this ?? i have to graphic card but :
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how to fix this or this is no problem this is how is must be??