No, your laptop does not need 4GB of RAM to run Windows 8. The basic specifications for Windows 8 is 2GB for 64-bit or 1 GB for 32-bit. 4GB would help with the processor but would not be necessary.
The minimum requirement for RAM to run windows 7 is 1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit).
To run windows 7 you need at least 4gb of ram
Absolutely ! I'm running Windows 7 on a Toshiba laptop with 3GB of RAM - and it runs very well !
You can run Windows 7 with 1-2 GB of RAM depending on what you are doing. (More stuff you need more RAM) I Would go with at least 4 if not 8 GB of RAM to run Windows 7.
To run windows XP and Mac OSX they recommend a minimum of 128MB of RAM. However for optimal performance they recommend 256MD for windows XP and 512MB for Mac OSX
Windows XP can never "run like Windows 7", regardless of the amount of RAM installed.
Any amount will be fine in Windows and Mac. However, with lower amounts of RAM, you may need to run older versions of Opera.
for better perfomance must need 2 GB
A RAM Disk
Yes, you can run Microsoft Flight Simulator X on a Windows 7 laptop as long as the laptop meets system requirements.
4GB will be enough to run both operating systems and have room for applications.
Virtual machine