Windows 7 after installing .NET Framework 4.5.1, free RAM will decrease?

Question

Microsoft

I have a laptop with 4Gb RAM, Windows 7 Home Basic (32 bit without SP1), you need to install Microsoft .NET Framework 4.5.1 (according to Microsoft documentation , this is the maximum version for SP1), (I need at least 4.5)
Microsoft .NET Framework 4.5. 1 (offline installer)
Question : after installing the .NET Framework, will the available or free (as correct?) RAM decrease or not ? Will any processes be additionally launched by the system? How much will they "strain" my poor laptop?
There are registry branches at the specified link

4.5.1 	Исходный выпуск 	
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full

What does it mean? It turns out that .NET Framework can be installed as Client or as Full?
Who understands Windows, tell me please.

Answer 1

No.
This is just a library, it will be unpacked to your disk and will be written to the system.
Libraries themselves do not start in any way.
They will be used by your applications as needed.

I have a laptop with 4Gb RAM

Can't add? Another 4GB plank and work will become noticeably more comfortable.

Answer 2

in theory, no. everything is dotnet, should be launched on demand (although then it can sit in the background, but should be forced out by competing processes)
but I'm not an MS, I won't give a guarantee for an answer. for a warranty answer, you will most likely have to contact MS