Win7ult_64 memory amount after reboot

bluenitepk-1296989

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Apr 7, 2013
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Question is rather academic in nature: after a new OS installation on a formatted disk (not upgrade or repair system) and restart the same one occupied about 250 megabytes less by TaskManager. The old installation from the beginning occupied about 1GB, now 750 megabytes. There is everything same there was before, antivirus in the background, updates, SP1, same hw, etc. Does anyone have an explanation or insight?
thanks for the any advice
Peter
 

bluenitepk-1296989

Honorable
Apr 7, 2013
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10,520



restore points? this means that they are still in ram???