Will 64bit Windows recognize more than 4GB RAM ?

[zumitaka]

Hi everyone,
Im new here and i have a question about virtualBox. So i have installed windows7 32bit on my computer which have 4GB RAM. I have a virtual machine with windows2008 64 bit. The question is if i add 4GB additional ram will be able the virtual machine to recognize and use all RAM (8GB) that is installed ?

Thanks in advance.

[vbox4me2]

Read the Forum FAQ for 64bit Guest issues and requirements. Also read the part which explains what other VBox functions need vt-x

[zumitaka]

Thanks for your reply.
So my CPU support vt-x (E8500) and its enable. But it seems 64bit guest cant recognize more than 3.5GB RAM if my host is 32bit. Am im right ?

[vbox4me2]

No idea, never tried to see what the limits are, always been running a 64bit Host for 64bit Guests that need lots of ram, just try it and find out, the VM can always be used again when changing Host OS.

[Sasquatch]

The question is if i add 4GB additional ram will be able the virtual machine to recognize and use all RAM (8GB) that is installed ?

Not with your current Host. Since the Host is 32 bit, you won't be able to see or allocate more than 3,7 GB any way. If you get more than 4 GB on your system, go with a 64 bit Host. Else it doesn't do much. Like having a pool in your back yard, but no water in it. Fun to have, but unusable.

[zumitaka]

Thanks a lot all of you.
Best regards.