64 bit of windows eats up 2gb of ram?

Gameabc1

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Jun 24, 2014
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So i know that the 32-bit of windows need 1gb of ram and the 64-bit needs 2gb of ram on the requirements.Since i have 32-bit(win 7) right now and i have 4gb of ram,i see that i only can use 3gb of it.So if i upgrade to a 64-bit will i only have 2gb of ram to use?Or do i only have 3gb cause that the 32-bit max limit and if i upgrade to 64-bit i will get all 4gb of ram to use?

The OS i plan to upgrade to is Win 8(I know it looks like it was made for a tablet but i can just get the classic shell skin to make it look like win 7 and still get the performance boost from win 8).Im getting the Full-version of it,and i hear that it comes with the 32-bit and the 64-bit version of it.
 

Gameabc1

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Jun 24, 2014
21
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4,510


Yes i know but im asking since 64 bit needs 2gb of ram,will it eat up 2gb of my ram so i can only use 2gb of ram?